Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2015

Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at sqrt(s) = 8 TeV

V. Khachatryan
  • Fonction : Auteur
P. Busson
C. Mironov
P. Paganini
J.-L. Agram
E. Conte
D. Contardo
S. Viret

Résumé

Results are presented from a search for particle dark matter (DM), extra dimensions, and unparticles using events containing a jet and an imbalance in transverse momentum. The data were collected by the CMS detector in proton-proton collisions at the LHC and correspond to an integrated luminosity of 19.7 inverse femtobarns at a centre-of-mass energy of 8 TeV. The number of observed events is found to be consistent with the standard model prediction. Limits are placed on the DM-nucleon scattering cross section as a function of the DM particle mass for spin-dependent and spin-independent interactions. Limits are also placed on the scale parameter M[D] in the ADD model of large extra dimensions, and on the unparticle model parameter Lambda[U]. The constraints on ADD models and unparticles are the most stringent limits in this channel and those on the DM-nucleon scattering cross section are an improvement over previous collider results.

Dates et versions

in2p3-01056272 , version 1 (18-08-2014)

Identifiants

Citer

V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at sqrt(s) = 8 TeV. European Physical Journal C: Particles and Fields, 2015, 75, pp.235. ⟨10.1140/epjc/s10052-015-3451-4⟩. ⟨in2p3-01056272⟩
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