Upsilon Production In pp Collisions For Forward Rapidities At LHC

This is a continuation of recent studies of $\Upsilon(nS)$ production at the LHC in pp collisions. Our previous studies were for rapidity y=-1 to 1 for the CMS detector, while the present study is for y=2.5 to 4.0 at the LHC.Comment: 5 pages, 2 figure

On the role of AGN feedback on the thermal and chemodynamical properties of the hot intra-cluster medium

We present an analysis of the properties of the ICM in an extended set of cosmological hydrodynamical simulations of galaxy clusters and groups performed with the TreePM+SPH GADGET-3 code. Besides a set of non-radiative simulations, we carried out two sets of simulations including radiative cooling, star formation, metal enrichment and feedback from supernovae, one of which also accounts for the effect of feedback from AGN resulting from gas accretion onto super-massive black holes. These simulations are analysed with the aim of studying the relative role played by SN and AGN feedback on the general properties of the diffuse hot baryons in galaxy clusters and groups: scaling relations, temperature, entropy and pressure radial profiles, and ICM chemical enrichment. We find that simulations including AGN feedback produce scaling relations that are in good agreement with X-ray observations at all mass scales. However, our simulations are not able to account for the observed diversity between CC and NCC clusters: unlike for observations, we find that temperature and entropy profiles of relaxed and unrelaxed clusters are quite similar and resemble more the observed behaviour of NCC clusters. As for the pattern of metal enrichment, we find that an enhanced level of iron abundance is produced by AGN feedback with respect to the case of purely SN feedback. As a result, while simulations including AGN produce values of iron abundance in groups in agreement with observations, they over-enrich the ICM in massive clusters. The efficiency of AGN feedback in displacing enriched gas from halos into the inter-galactic medium at high redshift also creates a widespread enrichment in the outskirts of clusters and produces profiles of iron abundance whose slope is in better agreement with observations.Comment: 23 pages, 14 figures, 1 table, accepted for publication in MNRA

Investigating the properties of AGN feedback in hot atmospheres triggered by cooling-induced gravitational collapse

Radiative cooling may plausibly cause hot gas in the centre of a massive galaxy, or galaxy cluster, to become gravitationally unstable. The subsequent collapse of this gas on a dynamical timescale can provide an abundant source of fuel for AGN heating and star formation. Thus, this mechanism provides a way to link the AGN accretion rate to the global properties of an ambient cooling flow, but without the implicit assumption that the accreted material must have flowed onto the black hole from 10s of kiloparsecs away. It is shown that a fuelling mechanism of this sort naturally leads to a close balance between AGN heating and the radiative cooling rate of the hot, X-ray emitting halo. Furthermore, AGN powered by cooling-induced gravitational instability would exhibit characteristic duty cycles (delta) which are redolent of recent observational findings: delta is proportional to L_X/sigma_{*}^{3}, where L_X is the X-ray luminosity of the hot atmosphere, and sigma_{*} is the central stellar velocity dispersion of the host galaxy. Combining this result with well-known scaling relations, we deduce a duty cycle for radio AGN in elliptical galaxies that is approximately proportional to M_{BH}^{1.5}, where M_{BH} is the central black hole mass. Outburst durations and Eddington ratios are also given. Based on the results of this study, we conclude that gravitational instability could provide an important mechanism for supplying fuel to AGN in massive galaxies and clusters, and warrants further investigation.Comment: Accepted for publication in MNRAS. 8 page

Cosmological hydrodynamical simulations of galaxy clusters: X-ray scaling relations and their evolution

We analyse cosmological hydrodynamical simulations of galaxy clusters to study the X-ray scaling relations between total masses and observable quantities such as X-ray luminosity, gas mass, X-ray temperature, and $Y_{X}$. Three sets of simulations are performed with an improved version of the smoothed particle hydrodynamics GADGET-3 code. These consider the following: non-radiative gas, star formation and stellar feedback, and the addition of feedback by active galactic nuclei (AGN). We select clusters with $M_{500} > 10^{14} M_{\odot} E(z)^{-1}$, mimicking the typical selection of Sunyaev-Zeldovich samples. This permits to have a mass range large enough to enable robust fitting of the relations even at $z \sim 2$. The results of the analysis show a general agreement with observations. The values of the slope of the mass-gas mass and mass-temperature relations at $z=2$ are 10 per cent lower with respect to $z=0$ due to the applied mass selection, in the former case, and to the effect of early merger in the latter. We investigate the impact of the slope variation on the study of the evolution of the normalization. We conclude that cosmological studies through scaling relations should be limited to the redshift range $z=0-1$, where we find that the slope, the scatter, and the covariance matrix of the relations are stable. The scaling between mass and $Y_X$ is confirmed to be the most robust relation, being almost independent of the gas physics. At higher redshifts, the scaling relations are sensitive to the inclusion of AGNs which influences low-mass systems. The detailed study of these objects will be crucial to evaluate the AGN effect on the ICM.Comment: 24 pages, 11 figures, 5 tables, replaced to match accepted versio

Transition Radiation Spectra of Electrons from 1 to 10 GeV/c in Regular and Irregular Radiators

We present measurements of the spectral distribution of transition radiation generated by electrons of momentum 1 to 10 GeV/c in different radiator types. We investigate periodic foil radiators and irregular foam and fiber materials. The transition radiation photons are detected by prototypes of the drift chambers to be used in the Transition Radiation Detector (TRD) of the ALICE experiment at CERN, which are filled with a Xe, CO2 (15 %) mixture. The measurements are compared to simulations in order to enhance the quantitative understanding of transition radiation production, in particular the momentum dependence of the transition radiation yield.Comment: 18 pages, 15 figures, submitted to Nucl. Instr. Meth. Phys. Res.

Position Reconstruction in Drift Chambers operated with Xe, CO2 (15%)

We present measurements of position and angular resolution of drift chambers operated with a Xe,CO$_2$(15%) mixture. The results are compared to Monte Carlo simulations and important systematic effects, in particular the dispersive nature of the absorption of transition radiation and non-linearities, are discussed. The measurements were carried out with prototype drift chambers of the ALICE Transition Radiation Detector, but our findings can be generalized to other drift chambers with similar geometry, where the electron drift is perpendicular to the wire planes.Comment: 30 pages, 18 figure

Towards an understanding of the evolution of the scaling relations for supermassive black holes

The growth of the supermassive black holes (BHs) that reside at the centres of most galaxies is intertwined with the physical processes that drive the formation of the galaxies themselves. The evolution of the relations between the mass of the BH, m_BH, and the properties of its host therefore represent crucial aspects of the galaxy formation process. We use a cosmological simulation, as well as an analytical model, to investigate how and why the scaling relations for BHs evolve with cosmic time. We find that a simulation that reproduces the observed redshift zero relations between m_BH and the properties of its host galaxy, as well as the thermodynamic profiles of the intragroup medium, also reproduces the observed evolution in the ratio m_BH/m_s for massive galaxies, although the evolution of the m_BH/sigma relation is in apparent conflict with observations. The simulation predicts that the relations between m_BH and the binding energies of both the galaxy and its dark matter halo do not evolve, while the ratio m_BH/m_halo increases with redshift. The simple, analytic model of Booth & Schaye (2010), in which the mass of the BH is controlled by the gravitational binding energy of its host halo, quantitatively reproduces the latter two results. Finally, we can explain the evolution in the relations between m_BH and the mass and binding energy of the stellar component of its host galaxy for massive galaxies (m_s~10^11 M_sun) at low redshift (z<1) if these galaxies grow primarily through dry mergers.Comment: 8 pages, 3 figures; MNRAS accepte

Baryon fractions in clusters of galaxies: evidence against a preheating model for entropy generation

The Millennium Gas project aims to undertake smoothed-particle hydrodynamic resimulations of the Millennium Simulation, providing many hundred massive galaxy clusters for comparison with X-ray surveys (170 clusters with kTsl > 3 keV). This paper looks at the hot gas and stellar fractions of clusters in simulations with different physical heating mechanisms. These fail to reproduce cool-core systems but are successful in matching the hot gas profiles of non-cool-core clusters. Although there is immense scatter in the observational data, the simulated clusters broadly match the integrated gas fractions within r500 . In line with previous work, however, they fare much less well when compared to the stellar fractions, having a dependence on cluster mass that is much weaker than is observed. The evolution with redshift of the hot gas fraction is much larger in the simulation with early preheating than in one with continual feedback; observations favour the latter model. The strong dependence of hot gas fraction on cluster physics limits its use as a probe of cosmological parameters.Comment: 16 pages, 18 figures, 4 tables. Accepted for publication in MNRA

Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at root s=7 TeV

Citation: Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., . . . Collaboration, C. M. S. (2015). Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at root s=7 TeV. Physics Letters B, 741, 12-37. doi:10.1016/j.physletb.2014.12.003Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (p(T)) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (H-T), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb (1). The measured cross sections are compared to predictions from Monte Carlo generators, MADGRAPH + PYTHIA and SHERPA, and to next-to-leading-order calculations from BLACKHAT + SHERPA. The differential cross sections are found to be in agreement with the predictions, apart from the p(T) distributions of the leading jets at high p(T) values, the distributions of the H-T at high-H-T and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).Additional Authors: Kiesenhofer, W.;Knunz, V.;Krammer, M.;Kratschmer, I.;Liko, D.;Mikulec, I.;Rabady, D.;Rahbaran, B.;Rohringer, H.;Schofbeck, R.;Strauss, J.;Taurok, A.;Treberer-Treberspurg, W.;Waltenberger, W.;Wulz, C. E.;Mossolov, V.;Shumeiko, N.;SuarezGonzalez, J.;Alderweireldt, S.;Bansal, M.;Bansal, S.;Cornelis, T.;De Wolf, E. A.;Janssen, X.;Knutsson, A.;Luyckx, S.;Ochesanu, S.;Roland, B.;Rougny, R.;Van De Klundert, M.;Van Haevermaet, H.;Van Mechelen, P.;Van Remortel, N.;Van Spilbeeck, A.;Blekman, F.;Blyweert, S.;D'Hondt, J.;Daci, N.;Heracleous, N.;Kalogeropoulos, A.;Keaveney, J.;Kim, T. J.;Lowette, S.;Maes, M.;Olbrechts, A.;Python, Q.;Strom, D.;Tavernier, S.;Van Doninck, W.;Van Mulders, P.;Van Onsem, G. P.;Villella, I.;Caillol, C.;Clerbaux, B.;De Lentdecker, G.;Dobur, D.;Favart, L.;Gay, A. P. R.;Grebenyuk, A.;Leonard, A.;Mohammadi, A.;Pernie, L.;Reis, T.;Seva, T.;Thomas, L.;Vander Velde, C.;Vanlaer, P.;Wang, J.;Adler, V.;Beernaert, K.;Benucci, L.;Cimmino, A.;Costantini, S.;Crucy, S.;Dildick, S.;Fagot, A.;Garcia, G.;Klein, B.;McCartin, J.;Rios, A. A. O.;Ryckbosch, D.;Diblen, S. S.;Sigamani, M.;Strobbe, N.;Thyssen, F.;Tytgat, M.;Yazgan, E.;Zaganidis, N.;Basegmez, S.;Beluffi, C.;Bruno, G.;Castello, R.;Caudron, A.;Ceard, L.;Da Silveira, G. G.;Delaere, C.;du Pree, T.;Favart, D.;Forthomme, L.;Giammanco, A.;Hollar, J.;Jez, P.;Komm, M.;Lemaitre, V.;Liao, J.;Nuttens, C.;Pagano, D.;Perrini, L.;Pin, A.;Piotrzkowski, K.;Popov, A.;Quertenmont, L.;Selvaggi, M.;Marono, M. V.;Garcia, J. M. V.;Beliy, N.;Caebergs, T.;Daubie, E.;Hammad, G. H.;Alda, W. L.;Alves, G. A.;Martins, M. C.;Martins, T. D.;Pol, M. E.;Carvalho, W.;Chinellato, J.;Custodio, A.;Da Costa, E. M.;Damiao, D. D.;Martins, C. D.;De Souza, S. F.;Malbouisson, H.;Malek, M.;Figueiredo, D. M.;Mundim, L.;Nogima, H.;Da Silva, W. L. P.;Santaolalla, J.;Santoro, A.;Sznajder, A.;Manganote, E. J. T.;Pereira, A. V.;Bernardes, C. A.;Dias, F. A.;Tomei, Trfp;Gregores, E. M.;Mercadante, P. G.;Novaes, S. F.;Padula, S. S.;Aleksandrov, A.;Genchev, V.;Iaydjiev, P.;Marinov, A.;Piperov, S.;Rodozov, M.;Sultanov, G.;Vutova, M.;Dimitrov, A.;Glushkov, I.;Hadjiiska, R.;Kozhuharov, V.;Litov, L.;Pavlov, B.;Petkov, P.;Bian, J. G.;Chen, G. M.;Chen, H. S.;Chen, M.;Du, R.;Jiang, C. H.;Liang, D.;Liang, S.;Plestina, R.;Tao, J.;Wang, X.;Wang, Z.;Asawatangtrakuldee, C.;Ban, Y.;Guo, Y.;Li, Q.;Li, W.;Liu, S.;Mao, Y.;Qian, S. J.;Wang, D.;Zhang, L.;Zou, W.;Avila, C.;Sierra, L. F. C.;Florez, C.;Gomez, J. P.;Moreno, B. G.;Sanabria, J. C.;Godinovic, N.;Lelas, D.;Polic, D.;Puljak, I.;Antunovic, Z.;Kovac, M.;Brigljevic, V.;Kadija, K.;Luetic, J.;Mekterovic, D.;Sudic, L.;Attikis, A.;Mavromanolakis, G.;Mousa, J.;Nicolaou, C.;Ptochos, F.;Razis, P. A.;Bodlak, M.;Finger, M.;Finger, M.;Assran, Y.;Kamel, A. E.;Mahmoud, M. A.;Radi, A.;Kadastik, M.;Murumaa, M.;Raidal, M.;Tiko, A.;Eerola, P.;Fedi, G.;Voutilainen, M.;Harkonen, J.;Karimaki, V.;Kinnunen, R.;Kortelainen, M. J.;Lampen, T.;Lassila-Perini, K.;Lehti, S.;Linden, T.;Luukka, P.;Maenpaa, T.;Peltola, T.;Tuominen, E.;Tuominiemi, J.;Tuovinen, E.;Wendland, L.;Tuuva, T.;Besancon, M.;Couderc, F.;Dejardin, M.;Denegri, D.;Fabbro, B.;Faure, J. L.;Favaro, C.;Ferri, F.;Ganjour, S.;Givernaud, A.;Gras, P.;de Monchenault, G. H.;Jarry, P.;Locci, E.;Malcles, J.;Rander, J.;Rosowsky, A.;Titov, M.;Baffioni, S.;Beaudette, F.;Busson, P.;Charlot, C.;Dahms, T.;Dalchenko, M.;Dobrzynski, L.;Filipovic, N.;Florent, A.;de Cassagnac, R. G.;Mastrolorenzo, L.;Mine, P.;Mironov, C.;Naranjo, I. N.;Nguyen, M.;Ochando, C.;Paganini, P.;Salerno, R.;Sauvan, J. B.;Sirois, Y.;Veelken, C.;Yilmaz, Y.;Zabi, A.;Agram, J. L.;Andrea, J.;Aubin, A.;Bloch, D.;Brom, J. M.;Chabert, E. C.;Collard, C.;Conte, E.;Fontaine, J. C.;Gele, D.;Goerlach, U.;Goetzmann, C.;Le Bihan, A. C.;Van Hove, P.;Gadrat, S.;Beauceron, S.;Beaupere, N.;Boudoul, G.;Brochet, S.;Montoya, C. A. C.;Chasserat, J.;Chierici, R.;Contardo, D.;Depasse, P.;El Mamouni, H.;Fan, J.;Fay, J.;Gascon, S.;Gouzevitch, M.;Ille, B.;Kurca, T.;Lethuillier, M.;Mirabito, L.;Perries, S.;Alvarez, J. D. R.;Sabes, D.;Sgandurra, L.;Sordini, V.;Donckt, M.;Verdier, P.;Viret, S.;Xiao, H.;Tsamalaidze, Z.;Autermann, C.;Beranek, S.;Bontenackels, M.;Edelhoff, M.;Feld, L.;Hindrichs, O.;Klein, K.;Ostapchuk, A.;Perieanu, A.;Raupach, F.;Sammet, J.;Schael, S.;Sprenger, D.;Weber, H.;Wittmer, B.;Zhukov, V.;Ata, M.;Dietz-Laursonn, E.;Duchardt, D.;Erdmann, M.;Fischer, R.;Guth, A.;Hebbeker, T.;Heidemann, C.;Hoepfner, K.;Klingebiel, D.;Knutzen, S.;Kreuzer, P.;Merschmeyer, M.;Meyer, A.;Olschewski, M.;Padeken, K.;Papacz, P.;Reithler, H.;Schmitz, S. A.;Sonnenschein, L.;Teyssier, D.;Thuer, S.;Weber, M.;Cherepanov, V.;Erdogan, Y.;Flugge, G.;Geenen, H.;Geisler, M.;Ahmad, W. H.;Hoehle, F.;Kargoll, B.;Kress, T.;Kuessel, Y.;Lingemann, J.;Nowack, A.;Nugent, I. M.;Perchalla, L.;Pooth, O.;Stahl, A.;Asin, I.;Bartosik, N.;Behr, J.;Behrenhoff, W.;Behrens, U.;Bell, A. J.;Bergholz, M.;Bethani, A.;Borras, K.;Burgmeier, A.;Cakir, A.;Calligaris, L.;Campbell, A.;Choudhury, S.;Costanza, F.;Pardos, C. D.;Dooling, S.;Dorland, T.;Eckerlin, G.;Eckstein, D.;Eichhorn, T.;Flucke, G.;Garcia, J. G.;Geiser, A.;Gunnellini, P.;Hauk, J.;Hellwig, G.;Hempel, M.;Horton, D.;Jung, H.;Kasemann, M.;Katsas, P.;Kieseler, J.;Kleinwort, C.;Krucker, D.;Lange, W.;Leonard, J.;Lipka, K.;Lobanov, A.;Lohmann, W.;Lutz, B.;Mankel, R.;Marfin, I.;Melzer-Pellmann, I. A.;Meyer, A. B.;Mnich, J.;Mussgiller, A.;Naumann-Emme, S.;Nayak, A.;Novgorodova, O.;Nowak, F.;Ntomari, E.;Perrey, H.;Pitzl, D.;Placakyte, R.;Raspereza, A.;RibeiroCipriano, P. M.;Ron, E.;Sahin, M. O.;Salfeld-Nebgen, J.;Saxena, P.;Schmidt, R.;Schoerner-Sadenius, T.;Schroder, M.;Spannagel, S.;Trevino, Adrv;Walsh, R.;Wissing, C.;Martin, M. A.;Blobel, V.;Vignali, M. C.;Erfle, J.;Garutti, E.;Goebel, K.;Gorner, M.;Gosselink, M.;Haller, J.;Hoffmann, M.;Hoing, R. S.;Kirschenmann, H.;Klanner, R.;Kogler, R.;Lange, J.;Lapsien, T.;Lenz, T.;Marchesini, I.;Ott, J.;Peiffer, T.;Pietsch, N.;Rathjens, D.;Sander, C.;Schettler, H.;Schleper, P.;Schlieckau, E.;Schmidt, A.;Seidel, M.;Sibille, J.;Sola, V.;Stadie, H.;Steinbruck, G.;Troendle, D.;Usai, E.;Vanelderen, L.;Barth, C.;Baus, C.;Berger, J.;Boser, C.;Butz, E.;Chwalek, T.;De Boer, W.;Descroix, A.;Dierlamm, A.;Feindt, M.;Frensch, F.;Giffels, M.;Hartmann, F.;Hauth, T.;Husemann, U.;Katkov, I.;Kornmayer, A.;Kuznetsova, E.;Pardo, P. L.;Mozer, M. U.;Muller, T.;Nurnberg, A.;Quast, G.;Rabbertz, K.;Ratnikov, F.;Rocker, S.;Simonis, H. J.;Stober, F. M.;Ulrich, R.;Wagner-Kuhr, J.;Wayand, S.;Weiler, T.;Wolf, R.;Anagnostou, G.;Daskalakis, G.;Geralis, T.;Giakoumopoulou, V. A.;Kyriakis, A.;Loukas, D.;Markou, A.;Markou, C.;Psallidas, A.;Topsis-Giotis, I.;Panagiotou, A.;Saoulidou, N.;Stiliaris, E.;Aslanoglou, X.;Evangelou, I.;Flouris, G.;Foudas, C.;Kokkas, P.;Manthos, N.;Papadopoulos, I.;Paradas, E.;Bencze, G.;Hajdu, C.;Hidas, P.;Horvath, D.;Sikler, F.;Veszpremi, V.;Vesztergombi, G.;Zsigmond, A. J.;Beni, N.;Czellar, S.;Karancsi, J.;Molnar, J.;Palinkas, J.;Szillasi, Z.;Raics, P.;Trocsanyi, Z. L.;Ujvari, B.;Swain, S. K.;Beri, S. B.;Bhatnagar, V.;Dhingra, N.;Gupta, R.;Kalsi, A. K.;Kaur, M.;Mittal, M.;Nishu, N.;Singh, J. B.;Kumar, A.;Kumar, A.;Ahuja, S.;Bhardwaj, A.;Choudhary, B. C.;Kumar, A.;Malhotra, S.;Naimuddin, M.;Ranjan, K.;Sharma, V.;Banerjee, S.;Bhattacharya, S.;Chatterjee, K.;Dutta, S.;Gomber, B.;Jain, S.;Jain, S.;Khurana, R.;Modak, A.;Mukherjee, S.;Roy, D.;Sarkar, S.;Sharan, M.;Abdulsalam, A.;Dutta, D.;Kailas, S.;Kumar, V.;Mohanty, A. K.;Pant, L. M.;Shukla, P.;Topkar, A.;Aziz, T.;Banerjee, S.;Chatterjee, R. M.;Dewanjee, R. K.;Dugad, S.;Ganguly, S.;Ghosh, S.;Guchait, M.;Gurtu, A.;Kole, G.;Kumar, S.;Maity, M.;Majumder, G.;Mazumdar, K.;Mohanty, G. B.;Parida, B.;Sudhakar, K.;Wickramage, N.;Bakhshiansohi, H.;Behnamian, H.;Etesami, S. M.;Fahim, A.;Goldouzian, R.;Jafari, A.;Khakzad, M.;Najafabadi, M. M.;Naseri, M.;Mehdiabadi, S. P.;Safarzadeh, B.;Zeinali, M.;Felcini, M.;Grunewald, M.;Abbrescia, M.;Barbone, L.;Calabria, C.;Chhibra, S. S.;Colaleo, A.;Creanza, D.;De Filippis, N.;De Palma, M.;Fiore, L.;Iaselli, G.;Maggi, G.;Maggi, M.;My, S.;Nuzzo, S.;Pompili, A.;Pugliese, G.;Radogna, R.;Selvaggi, G.;Silvestris, L.;Singh, G.;Venditti, R.;Verwilligen, P.;Zito, G.;Abbiendi, G.;Benvenuti, A. C.;Bonacorsi, D.;Braibant-Giacomelli, S.;Brigliadori, L.;Campanini, R.;Capiluppi, P.;Castro, A.;Cavallo, F. R.;Codispoti, G.;Cuffiani, M.;Dallavalle, G. M.;Fabbri, F.;Fanfani, A.;Fasanella, D.;Giacomelli, P.;Grandi, C.;Guiducci, L.;Marcellini, S.;Masetti, G.;Montanari, A.;Navarria, F. L.;Perrotta, A.;Primavera, F.;Rossi, A. M.;Rovelli, T.;Siroli, G. P.;Tosi, N.;Travaglini, R.;Albergo, S.;Cappello, G.;Chiorboli, M.;Costa, S.;Giordano, F.;Potenza, R.;Tricomi, A.;Tuve, C.;Barbagli, G.;Ciulli, V.;Civinini, C.;D'Alessandro, R.;Focardi, E.;Gallo, E.;Gonzi, S.;Gori, V.;Lenzi, P.;Meschini, M.;Paoletti, S.;Sguazzoni, G.;Tropiano, A.;Benussi, L.;Bianco, S.;Fabbri, F.;Piccolo, D.;Ferro, F.;Lo Vetere, M.;Robutti, E.;Tosi, S.;Dinardo, M. E.;Fiorendi, S.;Gennai, S.;Gerosa, R.;Ghezzi, A.;Govoni, P.;Lucchini, M. T.;Malvezzi, S.;Manzoni, R. A.;Martelli, A.;Marzocchi, B.;Menasce, D.;Moroni, L.;Paganoni, M.;Pedrini, D.;Ragazzi, S.;Redaelli, N.;de Fatis, T. T.;Buontempo, S.;Cavallo, N.;Di Guida, S.;Fabozzi, F.;Iorio, A. O. M.;Lista, L.;Meola, S.;Merola, M.;Paolucci, P.;Azzi, P.;Bacchetta, N.;Bellato, M.;Bisello, D.;Branca, A.;Carlin, R.;Checchia, P.;Dall'Osso, M.;Dorigo, T.;Galanti, M.;Gasparini, F.;Gasparini, U.;Giubilato, P.;Gozzelino, A.;Kanishchev, K.;Lacaprara, S.;Margoni, M.;Meneguzzo, A. T.;Pazzini, J.;Pozzobon, N.;Ronchese, P.;Sgaravatto, M.;Tosi, M.;Triossi, A.;Ventura, S.;Zucchetta, A.;Zumerle, G.;Ratti, S. P.;Riccardi, C.;Salvini, P.;Vitulo, P.;Biasini, M.;Bilei, G. M.;Ciangottini, D.;Fano, L.;Lariccia, P.;Mantovani, G.;Menichelli, M.;Romeo, F.;Saha, A.;Santocchia, A.;Spiezia, A.;Androsov, K.;Azzurri, P.;Bagliesi, G.;Bernardini, J.;Boccali, T.;Broccolo, G.;Castaldi, R.;Ciocci, M. A.;Dell'Orso, R.;Donato, S.;Fiori, F.;Foa, L.;Giassi, A.;Grippo, M. T.;Ligabue, F.;Lomtadze, T.;Martini, L.;Messineo, A.;Moon, C. S.;Palla, F.;Rizzi, A.;Savoy-Navarro, A.;Serban, A. T.;Spagnolo, P.;Squillacioti, P.;Tenchini, R.;Tonelli, G.;Venturi, A.;Verdini, P. G.;Vernieri, C.;Barone, L.;Cavallari, F.;Del Re, D.;Diemoza, M.;Grassi, M.;Jorda, C.;Longo, E.;Margaroli, F.;Meridiani, P.;Micheli, F.;Nourbakhsh, S.;Organtini, G.;Paramatti, R.;Rahatlou, S.;Rovelli, C.;Santanastasio, F.;Soffi, L.;Traczyk, P.;Amapane, N.;Arcidiacono, R.;Argiro, S.;Arneodo, M.;Bellan, R.;Biino, C.;Cartiglia, N.;Casasso, S.;Costa, M.;Degano, A.;Demaria, N.;Finco, L.;Mariotti, C.;Maselli, S.;Migliore, E.;Monaco, V.;Musich, M.;Obertino, M. M.;Ortona, G.;Pacher, L.;Pastrone, N.;Pelliccioni, M.;Angioni, G. L. P.;Potenza, A.;Romero, A.;Ruspa, M.;Sacchi, R.;Solano, A.;Staiano, A.;Tamponi, U.;Belforte, S.;Candelise, V.;Casarsa, M.;Cossutti, F.;Della Ricca, G.;Gobbo, B.;LaLicata, C.;Marone, M.;Montanino, D.;Schizzi, A.;Umer, T.;Zanetti, A.;Chang, S.;Kropivnitskaya, A.;Nam, S. K.;Kim, D. H.;Kim, G. N.;Kim, M. S.;Kong, D. J.;Lee, S.;Oh, Y. D.;Park, H.;Sakharov, A.;Son, D. C.;Kim, J. Y.;Song, S.;Choi, S.;Gyun, D.;Hong, B.;Jo, M.;Kim, H.;Kim, Y.;Lee, B.;Lee, K. S.;Park, S. K.;Roh, Y.;Choi, M.;Kim, H.;Kim, J. H.;Park, I. C.;Park, S.;Ryu, G.;Ryu, M. S.;Choi, Y.;Choi, Y. K.;Goh, J.;Kwon, E.;Lee, J.;Seo, H.;Yu, I.;Juodagalvis, A.;Komaragiri, J. R.;Castilla-Valdez, H.;De La Cruz-Burelo, E.;Heredia-de La Cruz, I.;Lopez-Fernandez, R.;Sanchez-Hernandez, A.;Moreno, S. C.;Valencia, F. V.;Pedraza, I.;Ibarguen, H. A. S.;Linares, E. C.;Pineda, A. M.;Krofcheck, D.;Butler, P. H.;Reucroft, S.;Ahmad, A.;Ahmad, M.;Hassan, Q.;Hoorani, H. R.;Khalid, S.;Khan, W. A.;Khurshid, T.;Shah, M. A.;Shoaib, M.;Bialkowska, H.;Bluj, M.;Boimska, B.;Frueboes, T.;Gorski, M.;Kazana, M.;Nawrocki, K.;Romanowska-Rybinska, K.;Szleper, M.;Zalewski, P.;Brona, G.;Bunkowski, K.;Cwiok, M.;Dominik, W.;Doroba, K.;Kalinowski, A.;Konecki, M.;Krolikowski, J.;Misiura, M.;Olszewski, M.;Wolszczak, W.;Bargassa, P.;Silva, Cbde;Faccioli, P.;Parracho, P. G. F.;Gallinaro, M.;Nguyen, F.;Antunes, J. R.;Seixas, J.;Varela, J.;Vischia, P.;Golutvin, I.;Karjavin, V.;Konoplyanikov, V.;Korenkov, V.;Kozlov, G.;Lanev, A.;Malakhov, A.;Matveev, V.;Mitsyn, V. V.;Moisenz, P.;Palichik, V.;Perelygin, V.;Shmatov, S.;Shulha, S.;Skatchkov, N.;Smirnov, V.;Tikhonenko, E.;Zarubin, A.;Golovtsov, V.;Ivanov, Y.;Kim, V.;Levchenko, P.;Murzin, V.;Oreshkin, V.;Smirnov, I.;Sulimov, V.;Uvarov, L.;Vavilov, S.;Vorobyev, A.;Vorobyev, A.;Andreev, Y.;Dermenev, A.;Gninenko, S.;Golubev, N.;Kirsanov, M.;Krasnikov, N.;Pashenkov, A.;Tlisov, D.;Toropin, A.;Epshteyn, V.;Gavrilov, V.;Lychkovskaya, N.;Popov, V.;Safronov, G.;Semenov, S.;Spiridonov, A.;Stolin, V.;Vlasov, E.;Zhokin, A.;Andreev, V.;Azarkin, M.;Dremin, I.;Kirakosyan, M.;Leonidov, A.;Mesyats, G.;Rusakov, S. V.;Vinogradov, A.;Belyaev, A.;Boos, E.;Dubinin, M.;Dudko, L.;Ershov, A.;Gribushin, A.;Klyukhin, V.;Kodolova, O.;Lokhtin, I.;Obraztsov, S.;Petrushanko, S.;Savrin, V.;Snigirev, A.;Azhgirey, I.;Bayshev, I.;Bitioukov, S.;Kachanov, V.;Kalinin, A.;Konstantinov, D.;Krychkine, V.;Petrov, V.;Ryutin, R.;Sobol, A.;Tourtchanovitch, L.;Troshin, S.;Tyurin, N.;Uzunian, A.;Volkov, A.;Adzic, P.;Dordevic, M.;Ekmedzic, M.;Milosevic, J.;Maestre, J. A.;Battilana, C.;Calvo, E.;Cerrada, M.;Llatas, M. C.;Colino, N.;De La Cruz, B.;Peris, A. D.;Vazquez, D. D.;Del Valle, A. E.;Bedoya, C. F.;Ramos, J. P. F.;Flix, J.;Fouz, M. C.;Garcia-Abia, P.;Lopez, O. G.;Lopez, S. G.;Hernandez, J. M.;Josa, M. I.;Merino, G.;De Martino, E. N.;Yzquierdo, A. P. C.;Pelayo, J. P.;Olmeda, A. Q.;Redondo, I.;Romero, L.;Soares, M. S.;Albajar, C.;de Troconiz, J. F.;Missiroli, M.;Brun, H.;Cuevas, J.;Menendez, J. F.;Folgueras, S.;Caballero, I. G.;Iglesias, L. L.;Cifuentes, J. A. B.;Cabrillo, I. J.;Calderon, A.;Campderros, J. D.;Fernandez, M.;Gomez, G.;Graziano, A.;Virto, A. L.;Marco, J.;Marco, R.;Rivero, C. M.;Matorras, F.;Sanchez, F. J. M.;Gomez, J. P.;Rodrigo, T.;Rodriguez-Marrero, A. Y.;Ruiz-Jimeno, A.;Scodellaro, L.;Vila, I.;Cortabitarte, R. V.;Abbaneo, D.;Auffray, E.;Auzinger, G.;Bachtis, M.;Baillon, P.;Ball, A. H.;Barney, D.;Benaglia, A.;Bendavid, J.;Benhabib, L.;Benitez, J. F.;Bernet, C.;Bianchi, G.;Bloch, P.;Bocci, A.;Bonato, A.;Bondu, O.;Botta, C.;Breuker, H.;Camporesi, T.;Cerminara, G.;Colafranceschi, S.;D'Alfonso, M.;d'Enterria, D.;Dabrowski, A.;David, A.;De Guio, F.;De Roeck, A.;De Visscher, S.;Dobson, M.;Dupont-Sagorin, N.;Elliott-Peisert, A.;Eugster, J.;Franzoni, G.;Funk, W.;Gigi, D.;Gill, K.;Giordano, D.;Girone, M.;Glege, F.;Guida, R.;Gundacker, S.;Guthoff, M.;Hammer, J.;Hansen, M.;Harris, P.;Hegeman, J.;Innocente, V.;Janot, P.;Kousouris, K.;Krajczar, K.;Lecoq, P.;Lourenco, C.;Magini, N.;Malgeri, L.;Mannelli, M.;Marrouche, J.;Masetti, L.;Meijers, F.;Mersi, S.;Meschi, E.;Moortgat, F.;Morovic, S.;Mulders, M.;Musella, P.;Orsini, L.;Pape, L.;Perez, E.;Perrozzi, L.;Petrilli, A.;Petrucciani, G.;Pfeiffer, A.;Pierini, M.;Pimia, M.;Piparo, D.;Plagge, M.;Racz, A.;Rolandi, G.;Rovere, M.;Sakulin, H.;Schafer, C.;Schwick, C.;Sekmen, S.;Sharma, A.;Siegrist, P.;Silva, P.;Simon, M.;Sphicas, P.;Spiga, D.;Steggemann, J.;Stieger, B.;Stoye, M.;Treille, D.;Tsirou, A.;Veres, G. I.;Vlimant, J. R.;Wardle, N.;Wohri, H. K.;Zeuner, W. D.;Bertl, W.;Deiters, K.;Erdmann, W.;Horisberger, R.;Ingram, Q.;Kaestli, H. C.;Konig, S.;Kotlinski, D.;Langenegger, U.;Renker, D.;Rohe, T.;Bachmair, F.;Bani, L.;Bianchini, L.;Bortignon, P.;Buchmann, M. A.;Casal, B.;Chanon, N.;Deisher, A.;Dissertori, G.;Dittmar, M.;Donega, M.;Dunser, M.;Eller, P.;Grab, C.;Hits, D.;Lustermann, W.;Mangano, B.;Marini, A. C.;del Arbol, P. M. R.;Meister, D.;Mohr, N.;Nageli, C.;Nef, P.;Nessi-Tedaldi, F.;Pandolfi, F.;Pauss, F.;Peruzzi, M.;Quittnat, M.;Rebane, L.;Ronga, F. J.;Rossini, M.;Starodumov, A.;Takahashi, M.;Theofilatos, K.;Wallny, R.;Weber, H. A.;Amsler, C.;Canelli, M. F.;Chiochia, V.;De Cosa, A.;Hinzmann, A.;Hreus, T.;Rikova, M. I.;Kilminster, B.;Mejias, B. M.;Ngadiuba, J.;Robmann, P.;Snoek, H.;Taroni, S.;Verzetti, M.;Yang, Y.;Cardaci, M.;Chen, K. H.;Ferro, C.;Kuo, C. M.;Lin, W.;Lu, Y. J.;Volpe, R.;Yu, S. S.;Chang, P.;Chang, Y. H.;Chang, Y. W.;Chao, Y.;Chen, K. F.;Chen, P. H.;Dietz, C.;Grundler, U.;Hou, W. S.;Kao, K. Y.;Lei, Y. J.;Liu, Y. F.;Lu, R. S.;Majumder, D.;Petrakou, E.;Tzeng, Y. M.;Wilken, R.;Asavapibhop, B.;Srimanobhas, N.;Suwonjandee, N.;Adiguzel, A.;Bakirci, M. N.;Cerci, S.;Dozen, C.;Dumanoglu, I.;Eskut, E.;Girgis, S.;Gokbulut, G.;Gurpinar, E.;Hos, I.;Kangal, E. E.;Topaksu, A. K.;Onengut, G.;Ozdemir, K.;Ozturk, S.;Polatoz, A.;Sogut, K.;Cerci, D. S.;Tali, B.;Topakli, H.;Vergili, M.;Akin, I. V.;Bilin, B.;Bilmis, S.;Gamsizkan, H.;Karapinar, G.;Ocalan, K.;Surat, U. E.;Yalvac, M.;Zeyrek, M.;Gulmez, E.;Isildak, B.;Kaya, M.;Kaya, O.;Bahtiyar, H.;Barlas, E.;Cankocak, K.;Vardarli, F. I.;Yucel, M.;Levchuk, L.;Sorokin, P.;Brooke, J. J.;Clement, E.;Cussans, D.;Flacher, H.;Frazier, R.;Goldstein, J.;Grimes, M.;Heath, G. P.;Heath, H. F.;Jacob, J.;Kreczko, L.;Lucas, C.;Meng, Z.;Newbold, D. M.;Paramesvaran, S.;Poll, A.;Senkin, S.;Smith, V. J.;Williams, T.;Bell, K. W.;Belyaev, A.;Brew, C.;Brown, R. M.;Cockerill, D. J. A.;Coughlan, J. A.;Harder, K.;Harper, S.;Olaiya, E.;Petyt, D.;Shepherd-Themistocleous, C. H.;Thea, A.;Tomalin, I. R.;Womersley, W. J.;Worm, S. D.;Baber, M.;Bainbridge, R.;Buchmuller, O.;Burton, D.;Colling, D.;Cripps, N.;Cutajar, M.;Dauncey, P.;Davies, G.;Della Negra, M.;Dunne, P.;Ferguson, W.;Fulcher, J.;Futyan, D.;Gilbert, A.;Hall, G.;Iles, G.;Jarvis, M.;Karapostoli, G.;Kenzie, M.;Lane, R.;Lucas, R.;Lyons, L.;Magnan, A. M.;Malik, S.;Mathias, B.;Nash, J.;Nikitenko, A.;Pela, J.;Pesaresi, M.;Petridis, K.;Raymond, D. M.;Rogerson, S.;Rose, A.;Seez, C.;Sharp, P.;Tapper, A.;Acosta, M. V.;Virdee, T.;Cole, J. E.;Hobson, P. R.;Khan, A.;Kyberd, P.;Leggat, D.;Leslie, D.;Martin, W.;Reid, I. D.;Symonds, P.;Teodorescu, L.;Turner, M.;Dittmann, J.;Hatakeyama, K.;Kasmi, A.;Liu, H.;Scarborough, T.;Charaf, O.;Cooper, S. I.;Henderson, C.;Rumerio, P.;Avetisyan, A.;Bose, T.;Fantasia, C.;Heister, A.;Lawson, P.;Richardson, C.;Rohlf, J.;Sperka, D.;John, J. S.;Sulak, L.;Alimena, J.;Bhattacharya, S.;Christopher, G.;Cutts, D.;Demiragli, Z.;Ferapontov, A.;Garabedian, A.;Heintz, U.;Jabeen, S.;Kukartsev, G.;Laird, E.;Landsberg, G.;Luk, M.;Narain, M.;Segala, M.;Sinthuprasith, T.;Speer, T.;Swanson, J.;Breedon, R.;Breto, G.;Sanchez, M. C. D.;Chauhan, S.;Chertok, M.;Conway, J.;Conway, R.;Cox, P. T.;Erbacher, R.;Gardner, M.;Ko, W.;Lander, R.;Miceli, T.;Mulhearn, M.;Pellett, D.;Pilot, J.;Ricci-Tam, F.;Searle, M.;Shalhout, S.;Smith, J.;Squires, M.;Stolp, D.;Tripathi, M.;Wilbur, S.;Yohay, R.;Cousins, R.;Everaerts, P.;Farrell, C.;Hauser, J.;Ignatenko, M.;Rakness, G.;Takasugi, E.;Valuev, V.;Weber, M.;Babb, J.;Clare, R.;Ellison, J.;Gary, J. W.;Hanson, G.;Heilman, J.;Jandir, P.;Kennedy, E.;Lacroix, F.;Liu, H.;Long, O. R.;Luthra, A.;Malberti, M.;Nguyen, H.;Shrinivas, A.;Sumowidagdo, S.;Wimpenny, S.;Andrews, W.;Branson, J. G.;Cerati, G. B.;Cittolin, S.;D'Agnolo, R. T.;Evans, D.;Holzner, A.;Kelley, R.;Klein, D.;Lebourgeois, M.;Letts, J.;Macneill, I.;Olivito, D.;Padhi, S.;Palmer, C.;Pieri, M.;Sani, M.;Sharma, V.;Simon, S.;Sudano, E.;Tadel, M.;Tu, Y.;Vartak, A.;Welke, C.;Wuerthwein, F.;Yagil, A.;Yoo, J.;Barge, D.;Bradmiller-Feld, J.;Campagnari, C.;Danielson, T.;Dishaw, A.;Flowers, K.;Sevilla, M. F.;Geffert, P.;George, C.;Golf, F.;Gouskos, L.;Incandela, J.;Justus, C.;McColl, N.;Richman, J.;Stuart, D.;To, W.;West, C.;Apresyan, A.;Bornheim, A.;Bunn, J.;Chen, Y.;Di Marco, E.;Duarte, J.;Mott, A.;Newman, H. B.;Pena, C.;Rogan, C.;Spiropulu, M.;Timciuc, V.;Wilkinson, R.;Xie, S.;Zhu, R. Y.;Azzolini, V.;Calamba, A.;Ferguson, T.;Iiyama, Y.;Paulini, M.;Russ, J.;Vogel, H.;Vorobiev, I.;Cumalat, J. P.;Drell, B. R.;Ford, W. T.;Gaz, A.;Lopez, E. L.;Nauenberg, U.;Smith, J. G.;Stenson, K.;Ulmer, K. A.;Wagner, S. R.;Alexander, J.;Chatterjee, A.;Chu, J.;Dittmer, S.;Eggert, N.;Hopkins, W.;Mirman, N.;Kaufman, G. N.;Patterson, J. R.;Ryd, A.;Salvati, E.;Skinnari, L.;Sun, W.;Teo, W. D.;Thom, J.;Thompson, J.;Tucker, J.;Weng, Y.;Winstrom, L.;Wittich, P.;Winn, D.;Abdullin, S.;Albrow, M.;Anderson, J.;Apollinari, G.;Bauerdick, L. A. T.;Beretvas, A.;Berryhill, J.;Bhat, P. C.;Burkett, K.;Butler, J. N.;Cheung, H. W. K.;Chlebana, F.;Cihangir, S.;Elvira, V. D.;Fisk, I.;Freeman, J.;Gao, Y.;Gottschalk, E.;Gray, L.;Green, D.;