First Measurement of Bose-Einstein Correlations in Proton-Proton Collisions at √s=0.9 and 2.36 TeV at the LHC

Authors

• V. Khachatryan, Yerevan Physics Institute
• Kenneth A. Bloom, University of Nebraska-LincolnFollow
• S. Bose, University of Nebraska - LincolnFollow
• J. Butt, University of Nebraska - Lincoln
• Daniel R. Claes, University of Nebraska - LincolnFollow
• Aaron Dominguez, University of Nebraska-LincolnFollow
• M. Eads, University of Nebraska - LincolnFollow
• J. Keller, University of Nebraska - Lincoln
• T. Kelly, University of Nebraska - Lincoln
• Ilya Kravchenko, University of Nebraska-LincolnFollow
• J. Lazo-Flores, University of Nebraska - LincolnFollow
• C. Lundstedt, University of Nebraska - LincolnFollow
• H. Malbouisson, University of Nebraska - Lincoln
• S. Malik, University of Nebraska - LincolnFollow
• Gregory Snow, University of Nebraska - LincolnFollow
• CMS Collaboration

Document Type

Article

Date of this Version

2010

Comments

Published in Physical Review Letters 105, 032001 (2010) DOI: 10.1103/PhysRevLett.105.032001.Copyright 2010 CERN, forCMS Collaboration.

Abstract

Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed in the form of an enhancement of pairs of same-sign charged particles with small relative four-momentum. The size of the correlated particle emission region is seen to increase significantly with the particle multiplicity of the event.