Search for jet extinction in the inclusive jet-pt spectrum from proton-proton collisions at sqrt(s) = 8 TeV

Journal Article · Fri Aug 01 00:00:00 EDT 2014 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.90.032005· OSTI ID:1182763

Khachatryan, Vardan ^[1]; et al.,

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1. Yerevan Physcis Institute (Armenia)

The first search at the LHC for the extinction of QCD jet production is presented, using data collected with the CMS detector corresponding to an integrated luminosity of 10.7 inverse femtobarns of proton-proton collisions at a center-of-mass energy of 8 TeV. The extinction model studied in this analysis is motivated by the search for signatures of strong gravity at the TeV scale (terascale gravity) and assumes the existence of string couplings in the strong-coupling limit. In this limit, the string model predicts the suppression of all high-transverse-momentum standard model processes, including jet production, beyond a certain energy scale. To test this prediction, the measured transverse-momentum spectrum is compared to the theoretical prediction of the standard model. No significant deficit of events is found at high transverse momentum. A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: CMS Collaboration
• OSTI ID: 1182763
• Report Number(s): CMS-EXO-12-051; CERN-PH-EP-2014-108; FERMILAB-PUB-14-163-CMS; arXiv eprint number arXiv:1405.7653
• Journal Information: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 90, Issue 3; ISSN 1550-7998
• Country of Publication: United States
• Language: English