Abulencia, A;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
Amerio, S;
... CDF Collaboration; + view all
(2007)
Measurement of sigma B-chi c2(chi(c2)-> J/psi gamma)/sigma B-chi c1(chi(c1)-> J/psi gamma) in p(p)over-bar collisions at root s=1.96 TeV.
PHYS REV LETT
, 98
(23)
, Article 232001. 10.1103/PhysRevLett.98.232001.
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Abstract
We measure the ratio of cross section times branching fraction, R-p=sigma B-chi c2(chi(c2)-> J/psi gamma)/sigma B-chi c1(chi(c1)-> J/psi gamma), in 1.1 fb(-1) of p (p) over bar collisions at root s=1.96 TeV. This measurement covers the kinematic range p(T)(J/psi)> 4.0 GeV/c, |eta(J/psi)< 1.0, and p(T)(gamma)> 1.0 GeV/c. For events due to prompt processes, we find R-p=0.395 +/- 0.016(stat)+/- 0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt chi(c1,2) hadro production.
| Type: | Article |
|---|---|
| Title: | Measurement of sigma B-chi c2(chi(c2)-> J/psi gamma)/sigma B-chi c1(chi(c1)-> J/psi gamma) in p(p)over-bar collisions at root s=1.96 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.232001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.232001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | ROOT S=1.8 TEV, J/PSI |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/131700 |
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