Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at √s=7  TeV

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URI: http://hdl.handle.net/10902/1852
ISSN: 0031-9007
ISSN: 1079-7114
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Author
Khachatryan, Vladimir; Brochero Cifuentes, Javier AndrésAutoridad Unican; Cabrillo Bartolomé, José Ibán; Calderón Tazón, AliciaAutoridad Unican; Chamizo Llatas, María; Chuang, Shan Huei; Duarte Campderros, Jorge; Felcini, Marta; Fernández García, MarcosAutoridad Unican; Gómez Gramuglio, Gervasio; González Sánchez, Francisco JavierAutoridad Unican; Jordá Lope, Clara; Lobelle Pardo, Patricia; López Virto, María Amparo; Marco de Lucas, Jesús; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, FranciscoAutoridad Unican; Muñoz Sánchez, Francisca Javiela; [et al.]
Date
2011-05-18
Derechos
Atribución 3.0 España.©2011 CERN, for the CMS Collaboration
Publicado en
Physical Review Letters, vol 106, iss. 20, art. num. 201804 (2011)
Publisher
American Physical Society.
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Abstract:
Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at √s=7  TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36  pb-1. The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Λ+=5.6  TeV (Λ-=6.7  TeV) for destructive (constructive) interference is obtained at the 95% confidence level.
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Atribución 3.0 España.©2011 CERN, for the CMS CollaborationExcept where otherwise noted, this item's license is described as Atribución 3.0 España.©2011 CERN, for the CMS Collaboration