Conference proceeding
Quarkonium and Bc mesons from Pb + Pb at LHC energies
Journal of physics. Conference series, Vol.458(1), 012026
08/23/2013
DOI: 10.1088/1742-6596/458/1/012026
Abstract
The b (Υ) mesons appear to be produced in the initial PbPb collision at 2.76 TeV per nucleon pair followed by partial melting in the hot quark-gluon plasma. In sharp contrast, the c (J/Ψ) mesons seem more likely to be formed by recombination at the hadronization stage. The Bc mesons, with one quark of each kind are seldom seen in pp collisions because a particle-antiparticle pair requires the simultaneous production of four heavy quarks. Although a family of Bc mesons have been predicted, only the ground state has been seen. If the c mesons are produced by recombination, it could be expected that Bc mesons would be abundant with PbPb. Because the quark and antiquark have different flavor, the Bc are relatively long lived, 0.45 ps (to be compared with about 1.5 ps for the lighter B mesons). They would be seen with PbPb reactions by B±c → J/Ψ(μ+μ−)π± looking at muons and pions from displaced vertices.
Details
- Title: Subtitle
- Quarkonium and Bc mesons from Pb + Pb at LHC energies
- Creators
- Jane NachtmanYasar Onel
- Resource Type
- Conference proceeding
- Publication Details
- Journal of physics. Conference series, Vol.458(1), 012026
- DOI
- 10.1088/1742-6596/458/1/012026
- ISSN
- 1742-6588
- eISSN
- 1742-6596
- Publisher
- IOP Publishing
- Language
- English
- Date published
- 08/23/2013
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199730502771
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