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Title: Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at $$\sqrt{s} = 8$$ TeV

Journal Article · · The European Physical Journal. C, Particles and Fields
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.

Our 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 19.7fb-1 at a centre-of-mass energy of 8TeV. 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 MD in the Arkani-Hamed, Dimopoulos, and Dvali (ADD) model of large extra dimensions, and on the unparticle model parameter ΛU. Finally, 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.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1234843
Report Number(s):
FERMILAB-PUB-14-317-CMS; CERN-PH-EP-2014-164; CMS-EXO-12-048; arXiv eprint number arXiv:1408.3583
Journal Information:
The European Physical Journal. C, Particles and Fields, Vol. 75, Issue 5; ISSN 1434-6052
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 288 works
Citation information provided by
Web of Science

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