Probing color coherence effects in pp collisions at √s = 7 TeV

Journal Article · 10 June 2014 · European Physical Journal. C, Particles and Fields

DOI: https://doi.org/10.1140/epjc/s10052-014-2901-8 · OSTI ID:1151693

Chatrchyan, Serguei ^[1]

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1. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

A study of color coherence effects in pp collisions at a center-of-mass energy of 7 TeV is presented. The data used in the analysis were collected in 2010 with the CMS detector at the LHC and correspond to an integrated luminosity of 36 inverse picobarns. Events are selected that contain at least three jets and where the two jets with the largest transverse momentum exhibit a back-to-back topology. The measured angular correlation between the second- and third-leading jet is shown to be sensitive to color coherence effects, and is compared to the predictions of Monte Carlo models with various implementations of color coherence. None of the models describe the data satisfactorily.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: The CMS Collaboration
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1151693
• Alternate ID(s): OSTI ID: 22260242
• Report Number(s): FERMILAB-PUB--13-620-CMS; arXiv eprint number arXiv:1311.5815
• Journal Information: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 6 Vol. 74; ISSN 1434-6044
• Publisher: SpringerCopyright Statement
• Country of Publication: United States
• Language: English