Searches for new physics using the t(t)over-bar invariant mass distribution in pp collisions at root s=8 TeV
PHYSICAL REVIEW LETTERS, vol.111, no.21, 2013 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 111 Issue: 21
- Publication Date: 2013
- Doi Number: 10.1103/physrevlett.111.211804
- Journal Name: PHYSICAL REVIEW LETTERS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Middle East Technical University Affiliated: Yes
Abstract
Searches for anomalous top quark-antiquark production are presented, based on pp collisions at root s = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb(-1), were collected with the CMS detector at the LHC. The observed t (t) over bar invariant mass spectrum is found to be compatible with the standard model prediction. Limits on the production cross section times branching fraction probe, for the first time, a region of parameter space for certain models of new physics not yet constrained by precision measurements.