Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at √s= 13 TeV

Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Asilar, E. and Bergauer, T. and Brandstetter, J. and Dragicevic, M. and Ero, J. and Del Valle, AE and Flech, M. and Fruhwirth, R. and Ghete, V. M. and Hrubec, J. and Jeitler, M. and Krammer, N. and Kratschmer, I and Liko, D. and Madlener, T. and Mikulec, I and Rad, N. and Rohringer, H. and Schieck, J. and Schofbeck, R. and Spanring, M. and Spitzbart, D. and Taurok, A. and Waltenberger, W. and Wittmann, J. and Wulz, C-E and Bartók, Márton and Csanád, Máté and Filipovic, Nicolas and Major, Péter and Pásztor, Gabriella and Veres, Gábor and Bencze, György and Hajdu, Csaba and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Béni, Noémi Tekla and Czellár, Sándor and Karancsi, János and Makovec, Alajos and Molnár, József and Szillási, Zoltán and Ujvári, Balázs (2019) Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at √s= 13 TeV. PHYSICAL REVIEW D, 99 (1). ISSN 2470-0010

Preview

Text 1810.11822.pdf Download (1MB) | Preview

Abstract

A search for narrow, low-mass, scalar and pseudoscalar resonances decaying to bottom quark-antiquark pairs is presented. The search is based on events recorded in s√= 13 TeV proton-proton collisions with the CMS detector at the LHC, collected in 2016, and corresponding to an integrated luminosity of 35.9 fb−1. The search selects events in which the resonance would be produced with high transverse momentum because of the presence of initial- or final-state radiation. In such events, the decay products of the resonance would be reconstructed as a single large-radius jet with high mass and two-prong substructure. A potential signal would be identified as a narrow excess in the jet invariant mass spectrum. No evidence for such a resonance is observed within the mass range from 50 to 350 GeV, and upper limits at 95% confidence level are set on the product of the cross section and branching fraction to a bottom quark-antiquark pair. These constitute the first constraints from the LHC on exotic bottom quark-antiquark resonances with masses below 325 GeV.

Actions (login required)

Edit Item