Building CMS Pixel Barrel Detectur Modules

For the barrel part of the CMS pixel tracker about 800 silicon pixel detector modules are required. The modules are bump bonded, assembled and tested at the Paul Scherrer Institute. This article describes the experience acquired during the assembly of the first ~200 modules.Comment: 5 pages, 7 figures, Vertex200

CMS Barrel Pixel Detector Overview

The pixel detector is the innermost tracking device of the CMS experiment at the LHC. It is built from two independent sub devices, the pixel barrel and the end disks. The barrel consists of three concentric layers around the beam pipe with mean radii of 4.4, 7.3 and 10.2 cm. There are two end disks on each side of the interaction point at 34.5 cm and 46.5 cm. This article gives an overview of the pixel barrel detector, its mechanical support structure, electronics components, services and its expected performance.Comment: Proceedings of Vertex06, 15th International Workshop on Vertex Detector

Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV

A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. The reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photons from Hγγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events

Measurement of jet multiplicity distributions in [Formula: see text] production in pp collisions at [Formula: see text].

The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7[Formula: see text] at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton+jets decay channels using data corresponding to an integrated luminosity of 5.0[Formula: see text]. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the [Formula: see text] production is determined as a function of the additional jet multiplicity in the lepton+jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed

Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at ?s = 8 TeV

Citation: The, C. M. S. c., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., . . . Woods, N. (2015). Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at ?s = 8 TeV. Journal of High Energy Physics, 2015(1). doi:10.1007/JHEP01(2015)053A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in the final state, requires exactly one isolated lepton (muon or electron) and exactly two jets, one of which is likely to originate from the hadronization of a bottom quark. The analysis is performed using data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the CERN LHC in 2012. The data sample corresponds to an integrated luminosity of 19.7 fb?1. The measured helicity fractions are FL = 0.298 ± 0.028 (stat) ± 0.032(syst), F0 = 0.720 ± 0.039 (stat) ± 0.037(syst), and FR = ?0.018 ± 0.019 (stat) ± 0.011(syst). These results are used to set limits on the real part of the tWb anomalous couplings, gL and gR. © 2015, The Author(s).Additional Authors: Kiesenhofer, W.;Knünz, V.;Krammer, M.;Krätschmer, I.;Liko, D.;Mikulec, I.;Rabady, D.;Rahbaran, B.;Rohringer, H.;Schöfbeck, R.;Strauss, J.;Treberer-Treberspurg, W.;Waltenberger, W.;Wulz, C. E.;Mossolov, V.;Shumeiko, N.;Suarez Gonzalez, J.;Alderweireldt, S.;Bansal, M.;Bansal, S.;Cornelis, T.;De Wolf, E. A.;Janssen, X.;Knutsson, A.;Lauwers, J.;Luyckx, S.;Ochesanu, S.;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.;Keaveney, 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.;Léonard, A.;Mohammadi, A.;Perniè, L.;Reis, T.;Seva, T.;Thomas, L.;Vander Velde, C.;Vanlaer, P.;Wang, J.;Zenoni, F.;Adler, V.;Beernaert, K.;Benucci, L.;Cimmino, A.;Costantini, S.;Crucy, S.;Dildick, S.;Fagot, A.;Garcia, G.;McCartin, J.;Ocampo Rios, A. A.;Ryckbosch, D.;Salva Diblen, 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.;Jafari, A.;Jez, P.;Komm, M.;Lemaitre, V.;Nuttens, C.;Pagano, D.;Perrini, L.;Pin, A.;Piotrzkowski, K.;Popov, A.;Quertenmont, L.;Selvaggi, M.;Vidal Marono, M.;Vizan Garcia, J. M.;Beliy, N.;Caebergs, T.;Daubie, E.;Hammad, G. H.;Aldá W.L, Jr.;Alves, G. A.;Brito, L.;Correa Martins M, Jr.;Dos Reis Martins, T.;Mora Herrera, C.;Pol, M. E.;Carvalho, W.;Chinellato, J.;Custódio, A.;Da Costa, E. M.;De Jesus Damiao, D.;De Oliveira Martins, C.;Fonseca De Souza, S.;Malbouisson, H.;Matos Figueiredo, D.;Mundim, L.;Nogima, H.;Prado Da Silva, W. L.;Santaolalla, J.;Santoro, A.;Sznajder, A.;Tonelli Manganote, E. J.;Vilela Pereira, A.;Bernardes, C. A.;Dogra, S.;Fernandez Perez Tomei, T. R.;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.;Litov, L.;Pavlov, B.;Petkov, P.;Bian, J. G.;Chen, G. M.;Chen, H. S.;Chen, M.;Cheng, T.;Du, R.;Jiang, C. H.;Plestina, R.;Romeo, F.;Tao, J.;Wang, Z.;Asawatangtrakuldee, C.;Ban, Y.;Li, Q.;Liu, S.;Mao, Y.;Qian, S. J.;Wang, D.;Zou, W.;Avila, C.;Cabrera, A.;Chaparro Sierra, L. F.;Florez, C.;Gomez, J. P.;Gomez Moreno, B.;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, Jr.;Assran, Y.;Ellithi Kamel, A.;Mahmoud, M. A.;Radi, A.;Kadastik, M.;Murumaa, M.;Raidal, M.;Tiko, A.;Eerola, P.;Fedi, G.;Voutilainen, M.;Härkönen, J.;Karimäki, V.;Kinnunen, R.;Kortelainen, M. J.;Lampén, T.;Lassila-Perini, K.;Lehti, S.;Lindén, T.;Luukka, P.;Mäenpää, T.;Peltola, T.;Tuominen, E.;Tuominiemi, J.;Tuovinen, E.;Wendland, L.;Talvitie, J.;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.;Hamel de Monchenault, G.;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.;Granier de Cassagnac, R.;Mastrolorenzo, L.;Miné, P.;Mironov, C.;Naranjo, I. N.;Nguyen, M.;Ochando, C.;Paganini, P.;Regnard, S.;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.;Gelé, D.;Goerlach, U.;Goetzmann, C.;Le Bihan, A. C.;Van Hove, P.;Gadrat, S.;Beauceron, S.;Beaupere, N.;Boudoul, G.;Bouvier, E.;Brochet, S.;Carrillo Montoya, C. A.;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.;Ruiz Alvarez, J. D.;Sabes, D.;Sgandurra, L.;Sordini, V.;Vander Donckt, M.;Verdier, P.;Viret, S.;Xiao, H.;Tsamalaidze, Z.;Autermann, C.;Beranek, S.;Bontenackels, M.;Edelhoff, M.;Feld, L.;Heister, A.;Hindrichs, O.;Klein, K.;Ostapchuk, A.;Raupach, F.;Sammet, J.;Schael, S.;Weber, H.;Wittmer, B.;Zhukov, V.;Ata, M.;Brodski, M.;Dietz-Laursonn, E.;Duchardt, D.;Erdmann, M.;Fischer, R.;Güth, A.;Hebbeker, T.;Heidemann, C.;Hoepfner, K.;Klingebiel, D.;Knutzen, S.;Kreuzer, P.;Merschmeyer, M.;Meyer, A.;Millet, P.;Olschewski, M.;Padeken, K.;Papacz, P.;Reithler, H.;Schmitz, S. A.;Sonnenschein, L.;Teyssier, D.;Thüer, S.;Weber, M.;Cherepanov, V.;Erdogan, Y.;Flügge, G.;Geenen, H.;Geisler, M.;Haj Ahmad, W.;Hoehle, F.;Kargoll, B.;Kress, T.;Kuessel, Y.;Künsken, A.;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.;Diez Pardos, C.;Dolinska, G.;Dooling, S.;Dorland, T.;Eckerlin, G.;Eckstein, D.;Eichhorn, T.;Flucke, G.;Garay Garcia, J.;Geiser, A.;Gunnellini, P.;Hauk, J.;Hempel, M.;Horton, D.;Jung, H.;Kalogeropoulos, A.;Kasemann, M.;Katsas, P.;Kieseler, J.;Kleinwort, C.;Korol, I.;Krücker, D.;Lange, W.;Leonard, J.;Lipka, K.;Lobanov, A.;Lohmann, W.;Lutz, B.;Mankel, R.;Marfin, I.;Melzer-Pellmann, I. A.;Meyer, A. B.;Mittag, G.;Mnich, J.;Mussgiller, A.;Naumann-Emme, S.;Nayak, A.;Novgorodova, O.;Ntomari, E.;Perrey, H.;Pitzl, D.;Placakyte, R.;Raspereza, A.;Ribeiro Cipriano, P. M.;Roland, B.;Ron, E.;Sahin, M. Ö;Salfeld-Nebgen, J.;Saxena, P.;Schmidt, R.;Schoerner-Sadenius, T.;Schröder, M.;Seitz, C.;Spannagel, S.;Vargas Trevino, A. D. R.;Walsh, R.;Wissing, C.;Aldaya Martin, M.;Blobel, V.;Centis Vignali, M.;Draeger, A. R.;Erfle, J.;Garutti, E.;Goebel, K.;Görner, M.;Haller, J.;Hoffmann, M.;Höing, R. S.;Junkes, A.;Kirschenmann, H.;Klanner, R.;Kogler, R.;Lange, J.;Lapsien, T.;Lenz, T.;Marchesini, I.;Ott, J.;Peiffer, T.;Perieanu, A.;Pietsch, N.;Poehlsen, J.;Poehlsen, T.;Rathjens, D.;Sander, C.;Schettler, H.;Schleper, P.;Schlieckau, E.;Schmidt, A.;Seidel, M.;Sola, V.;Stadie, H.;Steinbrück, G.;Troendle, D.;Usai, E.;Vanelderen, L.;Vanhoefer, A.;Barth, C.;Baus, C.;Berger, J.;Böser, C.;Butz, E.;Chwalek, T.;De Boer, W.;Descroix, A.;Dierlamm, A.;Feindt, M.;Frensch, F.;Giffels, M.;Gilbert, A.;Hartmann, F.;Hauth, T.;Husemann, U.;Katkov, I.;Kornmayer, A.;Kuznetsova, E.;Lobelle Pardo, P.;Mozer, M. U.;Müller, T.;Müller, T.;Nürnberg, A.;Quast, G.;Rabbertz, K.;Röcker, 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.;Agapitos, A.;Kesisoglou, S.;Panagiotou, A.;Saoulidou, N.;Stiliaris, E.;Aslanoglou, X.;Evangelou, I.;Flouris, G.;Foudas, C.;Kokkas, P.;Manthos, N.;Papadopoulos, I.;Paradas, E.;Strologas, J.;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.;Makovec, A.;Raics, P.;Trocsanyi, Z. L.;Ujvari, B.;Swain, S. K.;Beri, S. B.;Bhatnagar, V.;Gupta, R.;Bhawandeep, U.;Kalsi, A. K.;Kaur, M.;Kumar, R.;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.;Bhowmik, 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.;Khakzad, M.;Mohammadi Najafabadi, M.;Naseri, M.;Paktinat Mehdiabadi, S.;Rezaei Hosseinabadi, F.;Safarzadeh, B.;Zeinali, M.;Felcini, M.;Grunewald, M.;Abbrescia, M.;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.;Sharma, A.;Silvestris, L.;Venditti, R.;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.;Ferretti, R.;Ferro, F.;Vetere, M. L.;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.;Tabarelli de Fatis, 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.;Biasotto, M.;Bisello, D.;Carlin, R.;Checchia, P.;Dall’Osso, M.;Dorigo, T.;Dosselli, U.;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.;Simonetto, F.;Torassa, E.;Tosi, M.;Zotto, P.;Zucchetta, A.;Zumerle, G.;Gabusi, M.;Ratti, S. P.;Re, V.;Riccardi, C.;Salvini, P.;Vitulo, P.;Biasini, M.;Bilei, G. M.;Ciangottini, D.;Fanò, L.;Lariccia, P.;Mantovani, G.;Menichelli, M.;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.;Foà, 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.;D’imperio, G.;Del Re, D.;Diemoz, 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.;Pinna Angioni, G. L.;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.;La Licata, C.;Marone, M.;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, T. J.;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, J. H.;Park, I. C.;Ryu, G.;Ryu, M. S.;Choi, Y.;Choi, Y. K.;Goh, J.;Kim, D.;Kwon, E.;Lee, J.;Seo, H.;Yu, I.;Juodagalvis, A.;Komaragiri, J. R.;Ali, M. A. B. M.;Casimiro Linares, E.;Castilla-Valdez, H.;De La Cruz-Burelo, E.;Heredia-de La Cruz, I.;Hernandez-Almada, A.;Lopez-Fernandez, R.;Sanchez-Hernandez, A.;Carrillo Moreno, S.;Vazquez Valencia, F.;Pedraza, I.;Salazar Ibarguen, H. A.;Morelos Pineda, A.;Krofcheck, D.;Butler, P. H.;Reucroft, S.;Ahmad, A.;Ahmad, M.;Hassan, Q.;Hoorani, H. R.;Khan, W. A.;Khurshid, T.;Shoaib, M.;Bialkowska, H.;Bluj, M.;Boimska, B.;Frueboes, T.;Górski, 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.;Beirão Da Cruz, E. Silva C.;Faccioli, P.;Ferreira Parracho, P. G.;Gallinaro, M.;Lloret Iglesias, L.;Nguyen, F.;Rodrigues Antunes, J.;Seixas, J.;Varela, J.;Vischia, P.;Afanasiev, S.;Bunin, P.;Gavrilenko, M.;Golutvin, I.;Gorbunov, I.;Kamenev, A.;Karjavin, V.;Konoplyanikov, V.;Lanev, A.;Malakhov, A.;Matveev, V.;Moisenz, P.;Palichik, V.;Perelygin, V.;Shmatov, S.;Skatchkov, N.;Smirnov, V.;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.;Pozdnyakov, I.;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.;Bunichev, V.;Dubinin, M.;Dudko, L.;Gribushin, A.;Klyukhin, V.;Kodolova, O.;Lokhtin, I.;Obraztsov, S.;Perfilov, M.;Petrushanko, S.;Savrin, V.;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.;Ekmedzic, M.;Milosevic, J.;Rekovic, V.;Alcaraz Maestre, J.;Battilana, C.;Calvo, E.;Cerrada, M.;Chamizo Llatas, M.;Colino, N.;De La Cruz, B.;Delgado Peris, A.;Domínguez Vázquez, D.;Escalante Del Valle, A.;Fernandez Bedoya, C.;Fernández Ramos, J. P.;Flix, J.;Fouz, M. C.;Garcia-Abia, P.;Gonzalez Lopez, O.;Goy Lopez, S.;Hernandez, J. M.;Josa, M. I.;Navarro De Martino, E.;Pérez-Calero Yzquierdo, A.;Puerta Pelayo, J.;Quintario Olmeda, A.;Redondo, I.;Romero, L.;Soares, M. S.;Albajar, C.;de Trocóniz, J. F.;Missiroli, M.;Moran, D.;Brun, H.;Cuevas, J.;Fernandez Menendez, J.;Folgueras, S.;Gonzalez Caballero, I.;Brochero Cifuentes, J. A.;Cabrillo, I. J.;Calderon, A.;Duarte Campderros, J.;Fernandez, M.;Gomez, G.;Graziano, A.;Lopez Virto, A.;Marco, J.;Marco, R.;Martinez Rivero, C.;Matorras, F.;Munoz Sanchez, F. J.;Piedra Gomez, J.;Rodrigo, T.;Rodríguez-Marrero, A. Y.;Ruiz-Jimeno, A.;Scodellaro, L.;Vila, I.;Vilar Cortabitarte, R.;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.;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.;Di Marco, E.;Dobson, M.;Dordevic, 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.;Lourenço, 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.;Pimiä, M.;Piparo, D.;Plagge, M.;Racz, A.;Rolandi, G.;Rovere, M.;Sakulin, H.;Schäfer, C.;Schwick, C.;Sharma, A.;Siegrist, P.;Silva, P.;Simon, M.;Sphicas, P.;Spiga, D.;Steggemann, J.;Stieger, B.;Stoye, M.;Takahashi, Y.;Treille, D.;Tsirou, A.;Veres, G. I.;Wardle, N.;Wöhri, H. K.;Wollny, H.;Zeuner, W. D.;Bertl, W.;Deiters, K.;Erdmann, W.;Horisberger, R.;Ingram, Q.;Kaestli, H. C.;Kotlinski, D.;Langenegger, U.;Renker, D.;Rohe, T.;Bachmair, F.;Bäni, L.;Bianchini, L.;Buchmann, M. A.;Casal, B.;Chanon, N.;Dissertori, G.;Dittmar, M.;Donegà, M.;Dünser, M.;Eller, P.;Grab, C.;Hits, D.;Hoss, J.;Lustermann, W.;Mangano, B.;Marini, A. C.;Martinez Ruiz del Arbol, P.;Masciovecchio, M.;Meister, D.;Mohr, N.;Nägeli, C.;Nessi-Tedaldi, F.;Pandolfi, F.;Pauss, F.;Peruzzi, M.;Quittnat, M.;Rebane, L.;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.;Kilminster, B.;Lange, C.;Millan Mejias, B.;Ngadiuba, J.;Pinna, D.;Robmann, P.;Ronga, F. J.;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.;Liu, Y. F.;Lu, R. S.;Majumder, D.;Petrakou, E.;Tzeng, Y. M.;Wilken, R.;Asavapibhop, B.;Singh, G.;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.;Kayis Topaksu, A.;Onengut, G.;Ozdemir, K.;Ozturk, S.;Polatoz, A.;Sunar Cerci, D.;Tali, B.;Topakli, H.;Vergili, M.;Akin, I. V.;Bilin, B.;Bilmis, S.;Gamsizkan, H.;Isildak, B.;Karapinar, G.;Ocalan, K.;Sekmen, S.;Surat, U. E.;Yalvac, M.;Zeyrek, M.;Albayrak, E. A.;Gülmez, E.;Kaya, M.;Kaya, O.;Yetkin, T.;Cankocak, K.;Vardarl?, F. I.;Levchuk, L.;Sorokin, P.;Brooke, J. J.;Clement, E.;Cussans, D.;Flacher, H.;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.;Sakuma, T.;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.;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.;Vazquez Acosta, M.;Virdee, T.;Zenz, S. C.;Cole, J. E.;Hobson, P. R.;Khan, A.;Kyberd, P.;Leggat, D.;Leslie, D.;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.;Lawson, P.;Richardson, C.;Rohlf, J.;John, J. S.;Sulak, L.;Alimena, J.;Berry, E.;Bhattacharya, S.;Christopher, G.;Cutts, D.;Demiragli, Z.;Dhingra, N.;Ferapontov, A.;Garabedian, A.;Heintz, U.;Kukartsev, G.;Laird, E.;Landsberg, G.;Luk, M.;Narain, M.;Segala, M.;Sinthuprasith, T.;Speer, T.;Swanson, J.;Breedon, R.;Breto, G.;Calderon De La Barca Sanchez, M.;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.;Burt, K.;Clare, R.;Ellison, J.;Gary, J. W.;Hanson, G.;Heilman, J.;Ivova Rikova, M.;Jandir, P.;Kennedy, E.;Lacroix, F.;Long, O. R.;Luthra, A.;Malberti, M.;Olmedo Negrete, M.;Shrinivas, A.;Sumowidagdo, S.;Wimpenny, S.;Branson, J. G.;Cerati, G. B.;Cittolin, S.;D’Agnolo, R. T.;Holzner, A.;Kelley, R.;Klein, D.;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.;Würthwein, F.;Yagil, A.;Barge, D.;Bradmiller-Feld, J.;Campagnari, C.;Danielson, T.;Dishaw, A.;Dutta, V.;Flowers, K.;Franco Sevilla, M.;Geffert, P.;George, C.;Golf, F.;Gouskos, L.;Incandela, J.;Justus, C.;McColl, N.;Richman, J.;Stuart, D.;To, W.;West, C.;Yoo, J.;Apresyan, A.;Bornheim, A.;Bunn, J.;Chen, Y.;Duarte, J.;Mott, A.;Newman, H. B.;Pena, C.;Rogan, C.;Spiropulu, M.;Timciuc, V.;Vlimant, J. R.;Wilkinson, R.;Xie, S.;Zhu, R. Y.;Azzolini, V.;Calamba, A.;Carlson, B.;Ferguson, T.;Iiyama, Y.;Paulini, M.;Russ, J.;Vogel, H.;Vorobiev, I.;Cumalat, J. P.;Ford, W. T.;Gaz, A.;Krohn, M.;Luiggi Lopez, E.;Nauenberg, U.;Smith, J. G.;Stenson, K.;Ulmer, K. A.;Wagner, S. R.;Alexander, J.;Chatterjee, A.;Chaves, J.;Chu, J.;Dittmer, S.;Eggert, N.;Mirman, N.;Nicolas Kaufman, G.;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.;Bauer

Measurement of masses in the [Formula: see text] system by kinematic endpoints in pp collisions at [Formula: see text].

A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for [Formula: see text] events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb-1 collected by the CMS experiment in pp collisions at [Formula: see text]. The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of [Formula: see text] is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics

Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and b-quark multiplicity in pp collisions at [Formula: see text].

An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of 11.7 fb-1 collected by the CMS experiment at the LHC. In this search, a dimensionless kinematic variable, αT, is used to discriminate between events with genuine and misreconstructed missing transverse energy. The search is based on an examination of the number of reconstructed jets per event, the scalar sum of transverse energies of these jets, and the number of these jets identified as originating from bottom quarks. No significant excess of events over the standard model expectation is found. Exclusion limits are set in the parameter space of simplified models, with a special emphasis on both compressed-spectrum scenarios and direct or gluino-induced production of third-generation squarks. For the case of gluino-mediated squark production, gluino masses up to 950-1125 GeV are excluded depending on the assumed model. For the direct pair-production of squarks, masses up to 450 GeV are excluded for a single light first- or second-generation squark, increasing to 600 GeV for bottom squarks