Search for excited quarks in qq̅ → γγ at the CERN LHC

Bhattacharya, Satyaki ; Chauhan, Sushil S. ; Choudhary, Brajesh C. ; Choudhury, Debajyoti (2007) Search for excited quarks in qq̅ → γγ at the CERN LHC Physical Review D - Particles, Fields, Gravitation and Cosmology, 76 (11). 115017_1-115017_12. ISSN 1550-7998

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If quarks are composite particles, then excited states are expected to play a rôle in the Large Hadron Collider phenomena. Concentrating on virtual effects, and using a large part of the compact muon solenoid detection criteria, we present here a realistic examination of their effect in diphoton production at the CERN LHC. For various luminosities, we present the 99% confidence limit (CL) achievable in Λ-Mq* parameter space where Λ is the compositeness scale and Mq* the mass of the state. For a q* of mass 0.5 TeV, Λ≤1.55(2.95) can be excluded at 99% CL with 30 (200) fb−1 integrated luminosity.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:62208
Deposited On:20 Sep 2011 09:52
Last Modified:20 Sep 2011 09:52

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