Supersymmetric dark matter at the LHC 7-TeV run

Journal Article · Sun Aug 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.035003· OSTI ID:21432892

Bhattacharyya, Nabanita; Datta, Amitava ^[1]; Poddar, Sujoy ^[2]

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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)

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.

• OSTI ID: 21432892
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 82; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANNIHILATION
BOSONS
CERN LHC
CYCLIC ACCELERATORS
DENSITY
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
FIELD THEORIES
HIGGS BOSONS
HIGGS MODEL
INTERACTIONS
KINETIC ENERGY
LEP STORAGE RINGS
LEPTONS
LUMINOSITY
MASS
MATHEMATICAL MODELS
MATTER
NONLUMINOUS MATTER
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLE MODELS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
STABILITY
STORAGE RINGS
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
SYNCHROTRONS
TEV RANGE
TEV RANGE 01-10
TRANSVERSE ENERGY
UNIFIED-FIELD THEORIES