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


Creative Commons License

Chatrchyan S., Khachatryan V., Sirunyan A. M. , Tumasyan A., Adam W., Bergauer T., et al.

PHYSICS LETTERS B, cilt.711, ss.15-34, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 711 Konu: 1
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physletb.2012.03.029
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayısı: ss.15-34

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.