Author
Chatrchyan, S., Işıldak, Bora
Publication Date
2013-04-01
Publication Place
-
American Physical Society
Subject
Standard Model, Topcolor, LHC, Boson
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1550-2368
Record ID
b88278ad-a92a-4985-b223-e7d0409a0f3a
Library Location
Natural and Mathematical Sciences
Date
2013-04-01
Sample Text
A search for resonances decaying to top quark-antiquark pairs is performed using a dilepton + jets data sample recorded by the CMS experiment at the LHC in pp collisions at root s = 7 TeV corresponding to an integrated luminosity of 5.0 fb(-1). No significant deviations from the standard model background are observed. Upper limits are presented for the production cross section times branching fraction of top quark-antiquark resonances for masses from 750 to 3000 GeV. In particular, the existence of a leptophobic topcolor particle Z' is excluded at the 95% confidence level for resonance masses M-Z' < 1.3 TeV for Gamma(Z') = 0.012M(Z'), and M < 1.9 TeV for Gamma(Z') = 0.10M(Z').
DOI
10.1103/PhysRevD.87.072002
Cilt
87
