Title
Measurement of <tex>$\sigma_{\chi_{c2}}\mathcal{B}(\chi_{c2}\rightarrow J/\psi\gamma)/\sigma_{\chi_{c1}}\mathcal{B}(\chi_{c1}\rightarrow J/\psi\gamma$</tex> in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
98(2007) :23 , p. 232001,1-232001,7
ISSN
0031-9007
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We measure the ratio of cross section times branching fraction, Rp=σχc2B(χc2→J/ψγ)/σχc1B(χc1→J/ψγ), in 1.1  fb-1 of pp&#773; collisions at √s=1.96   TeV. This measurement covers the kinematic range pT(J/ψ)>4.0  GeV/c, |η(J/ψ)<1.0, and pT(γ)>1.0  GeV/c. For events due to prompt processes, we find Rp=0.395±0.016(stat)±0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt χc1,2 hadro production.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/49d3e7/eaa556c0.pdf
Handle