Search for excited quarks inqq¯→γγat the CERN LHC

Bhattacharya, Satyaki ; Chauhan, Sushil S. ; Choudhary, Brajesh C. ; Choudhury, Debajyoti (2007) Search for excited quarks inqq¯→γγat the CERN LHC Physical Review D - Particles, Fields, Gravitation and Cosmology, 76 (11). 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 Lambda-Mq* parameter space where Lambda is the compositeness scale and Mq* the mass of the state. For a q* of mass 0.5 TeV, Lambda

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