Search for dark matter produced in association with heavy-flavor quark pairs in proton-proton collisions at s = 13 TeV

A search is presented for an excess of events with heavy-flavor quark pairs ( and ) and a large imbalance in transverse momentum in data from proton-proton collisions at a center-of-mass energy of 13 . The data correspond to an integrated luminosity of 2.2 collected with the CMS detector at the CERN...

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Published in:The European physical journal. C, Particles and fields Particles and fields, 2017, Vol.77 (12), p.845-36
Main Authors: Brondolin, E, Friedl, M, Jeitler, M, Python, Q, Fasanella, G, Lenzi, T, Maerschalk, T, Gul, M, Caudron, A, Lemaitre, V, Quertenmont, L, Beliy, N, Brito, L, Perrini, L, Eerola, P, Järvinen, T, Abdulsalam, A, Zghiche, A, Andrea, J, Meyer, A, Krücker, D, Lelek, A, Lapsien, T, Usai, E, Dierlamm, A, Husemann, U, Ulrich, R, Mittal, M, Bhardwaj, A, Mahakud, B, Guchait, M, Kumar, S, Venditti, R, Chhibra, S S, Fanfani, A, Lenzi, P, Gennai, S, Benettoni, M, Torassa, E, Riccardi, C, Diemoz, M, Amapane, N, Lee, K, Yu, G B, Yusli, M N, Cruz, I Heredia-De La, Konecki, M, Lanev, A, Oreshkin, V, Pozdnyakov, I, Belyaev, A, Snigirev, A, Ryutin, R, Tyurin, N, Colino, N, Ramos, J P Fernández, Soares, M S, Gomez, J Piedra, d'Enterria, D, Perez, E, Petrucciani, G, Chang, P, Chang, Y H, Lu, R-S, Asavapibhop, B, Adiguzel, A, Grynyov, B, Della Negra, M, Lane, R, Pela, J, Rumerio, P, Cousins, R, Burt, K, Macneill, I, Campagnari, C, Andrews, M B, Wittich, P, Harris, R M, Mrenna, S, Rank, D, Terentyev, N, Wang, S, Apanasevich, L, Hangal, D A, Khalil, S, Baty, A, Cali, I A, D'Alfonso, M, Suarez, R Gonzalez, Barberis, E, Woodard, A, Flowers, S, Palmer, C, Akgun, B, Roberts, J, Gershtein, Y, Lath, A, Undleeb, S, Li, H, Belknap, D A
Format: Article
Language:English
Subjects:
CERN
Dark matter
Large Hadron Collider
Luminosity
Particle collisions
Protons
Quarks
Solenoids
Transverse momentum
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Summary:A search is presented for an excess of events with heavy-flavor quark pairs ( and ) and a large imbalance in transverse momentum in data from proton-proton collisions at a center-of-mass energy of 13 . The data correspond to an integrated luminosity of 2.2 collected with the CMS detector at the CERN LHC. No deviations are observed with respect to standard model predictions. The results are used in the first interpretation of dark matter production in and final states in a simplified model. This analysis is also the first to perform a statistical combination of searches for dark matter produced with different heavy-flavor final states. The combination provides exclusions that are stronger than those achieved with individual heavy-flavor final states.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-017-5317-4