Search for large extra dimensions in dimuon and dielectron events in pp collisions at root s=7 TeV


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Chatrchyan S., Khachatryan V., Sirunyan A. M., Tumasyan A., Adam W., Bergauer T., ...Daha Fazla

PHYSICS LETTERS B, cilt.711, sa.1, ss.15-34, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 711 Sayı: 1
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physletb.2012.03.029
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.15-34
  • Anahtar Kelimeler: CMS, Physics, Exotica, Dimuon, Dielectron, ADD, Extra dimensions, Gravitons, Field theories in dimensions other than four, FERMION-PAIR PRODUCTION, CONTACT INTERACTIONS, E(+)E(-) COLLISIONS, QCD CORRECTIONS, CROSS-SECTION, DISTRIBUTIONS, HIERARCHY, ENERGIES, GRAVITY, MODELS
  • Çukurova Üniversitesi Adresli: Evet

Özet

Results are presented from a search for large, extra spatial dimensions in events with either two isolated muons or two isolated electrons. The data are from proton-proton interactions at root s = 7 TeV collected with the CMS detector at the LHC. The size of the data sample corresponds to an integrated luminosity of approximately 2 fb(-1). The observed dimuon and dielectron mass spectra are found to be consistent with standard-model expectations. Depending on the number of extra dimensions, the 95% confidence level limits from the combined mu mu and ee channels range from M-s > 2.4 TeV to M-s > 3.8 TeV, where M-s characterizes the scale for the onset of quantum gravity. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.