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Title: Supersymmetric dark matter at the LHC 7-TeV run

Abstract

We have analyzed the early LHC signatures of the minimal supergravity (mSUGRA) model. Our emphasis is on the 7-TeV run corresponding to an integrated luminosity of {approx}1.0 fb{sup -1} although we have also discussed briefly the prospects at LHC-10 TeV. We focus on the parameter space yielding relatively light squark and gluinos consistent with the dark matter relic density data and the LEP bounds on the lightest Higgs scalar mass. This parameter space is only allowed for nonvanishing trilinear soft breaking term A{sub 0}. A significant region of the parameter space with large to moderate negative values of A{sub 0} consistent with the stability of the scalar potential and relic density production via neutralino annihilation and/or neutralino--stau coannihilation yields observable signal via the jets+missing transverse energy channel. The one lepton+jets+missing energy signal is also viable over a smaller but nontrivial parameter space. The ratio of the size of the two signals--free from theoretical uncertainties--may distinguish between different relic density generating mechanisms. With efficient {tau}-tagging facilities at 7 TeV, the discriminating power may increase significantly. We also comment on other dark matter relic density allowed mSUGRA scenarios and variants thereof in the context of LHC-7 TeV.

Authors:
;  [1];  [2]
  1. Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, PO: BCKV Campus Main Office, Mohanpur-741252, Nadia, West Bengal (India)
  2. Netaji Nagar Day College, 170/436, N.S.C. Bose Road, Kolkata-700 092 (India)
Publication Date:
OSTI Identifier:
21432892
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 82; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.82.035003; (c) 2010 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; CERN LHC; DENSITY; HIGGS BOSONS; HIGGS MODEL; LEP STORAGE RINGS; LEPTONS; LUMINOSITY; MASS; NONLUMINOUS MATTER; STABILITY; SUPERGRAVITY; SUPERSYMMETRY; SYMMETRY BREAKING; TEV RANGE 01-10; TRANSVERSE ENERGY; ACCELERATORS; BOSONS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; FERMIONS; FIELD THEORIES; INTERACTIONS; KINETIC ENERGY; MATHEMATICAL MODELS; MATTER; OPTICAL PROPERTIES; PARTICLE INTERACTIONS; PARTICLE MODELS; PHYSICAL PROPERTIES; POSTULATED PARTICLES; STORAGE RINGS; SYMMETRY; SYNCHROTRONS; TEV RANGE; UNIFIED-FIELD THEORIES

Citation Formats

Bhattacharyya, Nabanita, Datta, Amitava, and Poddar, Sujoy. Supersymmetric dark matter at the LHC 7-TeV run. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.035003.
Bhattacharyya, Nabanita, Datta, Amitava, & Poddar, Sujoy. Supersymmetric dark matter at the LHC 7-TeV run. United States. https://doi.org/10.1103/PHYSREVD.82.035003
Bhattacharyya, Nabanita, Datta, Amitava, and Poddar, Sujoy. Sun . "Supersymmetric dark matter at the LHC 7-TeV run". United States. https://doi.org/10.1103/PHYSREVD.82.035003.
@article{osti_21432892,
title = {Supersymmetric dark matter at the LHC 7-TeV run},
author = {Bhattacharyya, Nabanita and Datta, Amitava and Poddar, Sujoy},
abstractNote = {We have analyzed the early LHC signatures of the minimal supergravity (mSUGRA) model. Our emphasis is on the 7-TeV run corresponding to an integrated luminosity of {approx}1.0 fb{sup -1} although we have also discussed briefly the prospects at LHC-10 TeV. We focus on the parameter space yielding relatively light squark and gluinos consistent with the dark matter relic density data and the LEP bounds on the lightest Higgs scalar mass. This parameter space is only allowed for nonvanishing trilinear soft breaking term A{sub 0}. A significant region of the parameter space with large to moderate negative values of A{sub 0} consistent with the stability of the scalar potential and relic density production via neutralino annihilation and/or neutralino--stau coannihilation yields observable signal via the jets+missing transverse energy channel. The one lepton+jets+missing energy signal is also viable over a smaller but nontrivial parameter space. The ratio of the size of the two signals--free from theoretical uncertainties--may distinguish between different relic density generating mechanisms. With efficient {tau}-tagging facilities at 7 TeV, the discriminating power may increase significantly. We also comment on other dark matter relic density allowed mSUGRA scenarios and variants thereof in the context of LHC-7 TeV.},
doi = {10.1103/PHYSREVD.82.035003},
url = {https://www.osti.gov/biblio/21432892}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 3,
volume = 82,
place = {United States},
year = {2010},
month = {8}
}