Colour Reconnection at LEPII

The preliminary results on the search of colour reconnection effects (CR) from the four experiments at LEP, Aleph, Delphi, L3 and Opal, are reviewed. Extreme models are excluded by studies of standard variables, and on going studies of a method first suggested by L3, the particle flow method, are yet inconclusive.Comment: 8 pages, 6 figures (1 in eps, 5 in ps) talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China URL http://ismd31.ccnu.edu.cn

The Physics of UHECRs: Spectra, Composition and the Transition Galactic-Extragalactic

We review the experimental evidences about flux and mass composition of ultra high energy cosmic rays in connection with theoretical scenarios concerning astrophysical sources. In this context, we also address the discussion about the expected transition between cosmic rays produced inside the Galaxy and those coming from the intergalactic space.Comment: 6 pages, 10 figures, invited talk given at the "2016 International Conference on Ultra-High Energy Cosmic Rays (UHECR2016)", Kyoto (Japan), 11-14 October 2016, version accepted for publication on JPS Conference Proceeding

Large Scale Distribution Of Ultra High Energy Cosmic Rays Detected At The Pierre Auger Observatory With Zenith Angles Up To 80°

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)We present the results of an analysis of the large angular scale distribution of the arrival directions of cosmic rays with energy above 4 EeV detected at the Pierre Auger Observatory including for the first time events with zenith angle between 60° and 80°. We perform two Rayleigh analyses, one in the right ascension and one in the azimuth angle distributions, that are sensitive to modulations in right ascension and declination, respectively. The largest departure from isotropy appears in the 98E > 8 EeV energy bin, with an amplitude for the first harmonic in right ascension r1 α = (4.4 ± 1.0) × 10-2, that has a chance probability P (≥1 α) = 6.4 × 10-5, reinforcing the hint previously reported with vertical events alone. © 2015, The American Astronomical Society. All rights reserved.8022ARC, Science and Technology Facilities CouncilCNPq, Science and Technology Facilities CouncilCONACYT, Science and Technology Facilities CouncilFEDER, Science and Technology Facilities CouncilFOM, Science and Technology Facilities Council14-17501 S, GACR, Science and Technology Facilities Council1999/05404-3, FAPESP, Science and Technology Facilities Council2010/07359-6, FAPESP, Science and Technology Facilities Council2012/51015-5, FAPESP, Science and Technology Facilities CouncilANR-11-IDEX-0004-02, BMBF, Science and Technology Facilities CouncilDFG, Science and Technology Facilities CouncilINFN, Science and Technology Facilities CouncilNAFOSTED, Science and Technology Facilities Council0450696, NSF, Science and Technology Facilities CouncilSTFC, Science and Technology Facilities CouncilUNESCO, Science and Technology Facilities CouncilConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Aab, A., Abreu, P., Aglietta, M., (2014) JCAP, 8, p. 019Aab, A., Abreu, P., Aglietta, M., (2014) ApJ, 794, p. 172Aartsen, M.G., Abbasi, R., Abdou, Y., (2013) ApJ, 765, p. 55Abbasi, R., Abdou, Y., Abu-Zayyad, T., (2011) ApJ, 740, p. 16Abbasi, R., Abdou, Y., Abu-Zayyad, T., (2012) ApJ, 746, p. 33Abdo, A.A., Allen, B.T., Aune, T., (2009) ApJ, 698, p. 2121Abraham, J., Aglietta, M., Aguirre, I.C., (2004) NIMPA, 523, p. 50Abraham, J., Abreu, P., Aglietta, M., (2008) PhRvL, 101, p. 061101Abraham, J., Abreu, P., Aglietta, M., (2009) APh, 32, p. 89Abraham, J., Abreu, P., Aglietta, M., (2010) NIMPA, 620, p. 227Abraham, J., Abreu, P., Aglietta, M., (2010) NIMPA, 613, p. 29Abreu, P., Aglietta, M., Ahn, E.J., (2011) APh, 34, p. 627Abreu, P., Aglietta, M., Ahn, E.J., (2011) JCAP, 11, p. 022Abreu, P., Aglietta, M., Ahlers, M., (2012) ApJS, 203, p. 34Abreu, P., Aglietta, M., Ahlers, M., (2013) ApJL, 762, p. L13Aglietta, M., Alekseenko, V.V., Alessandro, B., (2009) ApJL, 692, p. L130Amenomori, M., Ayabe, S., Cui, S.W., (2005) ApJL, 626, p. L29Amenomori, M., Bi, X.J., Chen, D., (2009), arXiv:0909.1026Curcio, C., Apel, W.D., Arteaga-Velazquez, J.C., (2013) Int. Cosmic Ray Conf. Proc., p. 33. , Rio de Janeiro, BrazilDe Almeida, R., (2013) Int. Cosmic Ray Conf., p. 33. , (Rio de Janeiro, Brazil)(arXiv:1307.5059)Erdogdu, P., Lahav, O., Huchra, J.P., (2006) MNRAS, 368, p. 1515Greisen, K., (1966) PhRvL, 16, p. 748Guillian, G., Hosaka, J., Ishihara, K., (2007) PhRvD, 75, p. 062003Harari, D., Mollerach, S., Roulet, E., (2014) PhRvD, 89, p. 123001Hayashida, N., Honda, K., Inoue, N., (1999) APh, 10, p. 303Linsley, J., (1975) PhRvL, 34, p. 1530Pesce, R., (2011) Int. Cosmic Ray Conf. Proc., p. 32. , (Beijing, China) (arXiv: 1107.4809)Sidelnik, I., (2013) Int. Cosmic Ray Conf. Proc., 33. , (Rio de Janeiro, Brazil)(arXiv:1307.5059)Sommers, P., (2001) APh, 14, p. 71Verzi, V., (2013) Int. Cosmic Ray Conf. Proc., p. 33. , (Rio de Janeiro, Brazil) (arXiv: 1307.5059)Zatsepin, G.T., Kuz'min, V.A., (1966) JETPL, 4, p. 7

Battery simulation program

Computer program calculates spacecraft battery energy at specific times dictated by input sequence of recharge, discharge, and no activity phases. Recharge phases are assumed during times not specified, unless batteries are fully charged. Warnings are printed when energy falls below specified level. Program assumes two identical batteries

LHC Searches for Non-Chiral Weakly Charged Multiplets

Because the TeV-scale to be probed at the Large Hadron Collider should shed light on the naturalness, hierarchy, and dark matter problems, most searches to date have focused on new physics signatures motivated by possible solutions to these puzzles. In this paper, we consider some candidates for new states that although not well-motivated from this standpoint are obvious possibilities that current search strategies would miss. In particular we consider vector representations of fermions in multiplets of $SU(2)_L$ with a lightest neutral state. Standard search strategies would fail to find such particles because of the expected small one-loop-level splitting between charged and neutral states.Comment: 16 pages, 9 figure

Long-lived stops in MSSM scenarios with a neutralino LSP

This work investigates the possibility of a long-lived stop squark in supersymmetric models with the neutralino as the lightest supersymmetric particle (LSP). We study the implications of meta-stable stops on the sparticle mass spectra and the dark matter density. We find that in order to obtain a sufficiently long stop lifetime so as to be observable as a stable R-hadron at an LHC experiment, we need to fine tune the mass degeneracy between the stop and the LSP considerably. This increases the stop-neutralino coanihilation cross section, leaving the neutralino relic density lower than what is expected from the WMAP results for stop masses ~1.5 TeV/c^2. However, if such scenarios are realised in nature we demonstrate that the long-lived stops will be produced at the LHC and that stop-based R-hadrons with masses up to 1 TeV/c^2 can be detected after one year of running at design luminosity