Evidence for Simultaneous Production of J/ψ and Ï Mesons.
Phys Rev Lett
; 116(8): 082002, 2016 Feb 26.
Article
in En
| MEDLINE
| ID: mdl-26967412
ABSTRACT
We report evidence for the simultaneous production of J/ψ and Ï mesons in 8.1 fb^{-1} of data collected at sqrt[s]=1.96 TeV by the D0 experiment at the Fermilab pp[over ¯] Tevatron Collider. Events with these characteristics are expected to be produced predominantly by gluon-gluon interactions. In this analysis, we extract the effective cross section characterizing the initial parton spatial distribution, σ_{eff}=2.2±0.7(stat)±0.9(syst) mb.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2016
Type:
Article
Affiliation country:
RUSSIA