@article{3153442,
    title = "Search for stopped long-lived particles produced in pp collisions at
root s=7 TeV",
    author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and and Adam, W. and Bergauer, T. and Dragicevic, M. and Eroe, J. and and Fabjan, C. and Friedl, M. and Fruehwirth, R. and Ghete, V. M. and and Hammer, J. and Hoermann, N. and Hrubec, J. and Jeitler, M. and and Kiesenhofer, W. and Knuenz, V. and Krammer, M. and Liko, D. and Mikulec, and I. and Pernicka, M. and Rahbaran, B. and Rohringer, C. and Rohringer, H. and and Schoefbeck, R. and Strauss, J. and Taurok, A. and Wagner, P. and and Waltenberger, W. and Walzel, G. and Widl, E. and Wulz, C. -E. and and Mossolov, V. and Shumeiko, N. and Gonzalez, J. Suarez and Bansal, S. and and Cornelis, T. and De Wolf, E. A. and Janssen, X. and Luyckx, S. and Maes, and T. and Mucibello, L. and Ochesanu, S. and Roland, B. and Rougny, R. and and Selvaggi, M. and Staykova, Z. and Van Haevermaet, H. and Van Mechelen, and P. and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and and Blyweert, S. and D'Hondt, J. and Suarez, R. Gonzalez and Kalogeropoulos, and A. and Maes, M. and Olbrechts, A. and Van Doninck, W. and Van Mulders, and P. and Van Onsem, G. P. and Villella, I. and Clerbaux, B. and De and Lentdecker, G. and Dero, V. and Gay, A. P. R. and Hreus, T. and Leonard, and A. and Marage, P. E. and Reis, T. and Thomas, L. and Vander Velde, C. and and Vanlaer, P. and Wang, J. and Adler, V. and Beernaert, K. and and Cimmino, A. and Costantini, S. and Garcia, G. and Grunewald, M. and and Klein, B. and Lellouch, J. and Marinov, A. and Mccartin, J. and Rios, A. and A. Ocampo and Ryckbosch, D. and Strobbe, N. and Thyssen, F. and Tytgat, and M. and Verwilligen, P. and Walsh, S. and Yazgan, E. and Zaganidis, N. and and Basegmez, S. and Bruno, G. and Castello, R. and Caudron, A. and and Ceard, L. and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, and L. and Giammanco, A. and Hollar, J. and Lemaitre, V. and Liao, J. and and Militaru, O. and Nuttens, C. and Pagano, D. and Perrini, L. and Pin, A. and and Piotrzkowski, K. and Schul, N. and Garcia, J. M. Vizan and Beliy, N. and and Caebergs, T. and Daubie, E. and Hammad, G. H. and Alves, G. A. and and Correa Martins Junior, M. and De Jesus Damiao, D. and Martins, T. and and Pol, M. E. and Souza, M. H. G. and Aida Junior, W. L. and Carvalho, W. and and Custodio, A. and Da Costa, E. M. and De Oliveira Martins, C. and and Fonseca De Souza, S. and Matos Figueiredo, D. and Mundim, L. and Nogima, and H. and Oguri, V. and Prado Da Silva, W. 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    journal = "Journal of High Energy Physics",
    year = "2012",
    number = "8",
    publisher = "Springer-Verlag",
    issn = "1126-6708, 1029-8479",
    doi = "10.1007/JHEP08(2012)026",
    keywords = "Hadron-Hadron Scattering",
    abstract = "A search has been performed for long-lived particles that have stopped
in the CMS detector, during 7TeV proton-proton operations of the CERN
LHC. The existence of such particles could be inferred from observation
of their decays when there were no proton-proton collisions in the CMS
detector, namely during gaps between LHC beam crossings. Using a data
set in which CMS recorded an integrated luminosity of 4.0 fb(-1), and a
search interval corresponding to 246 hours of trigger live time, 12
events are observed, with a mean background prediction of 8.6 +/- 2.4
events. Limits are presented at 95% confidence level on long-lived
gluino and stop production, over 13 orders of magnitude of particle
lifetime. Assuming the “cloud model” of R-hadron interactions, a
gluino with mass below 640 GeV and a stop with mass below 340 GeV are
excluded, for lifetimes between 10 mu s and 1000s."
}