Lancaster, M;
Waters, DCDFC;
(2000)
Production of Upsilon(1S) Mesons from chi(b) Decays in p anti-p Collisions at s**(1/2) = 1.8 TeV.
Physical Review Letters
, 84
(10)
2094 -2099.
10.1103/PhysRevLett.84.2094.
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Abstract
We have reconstructed the radiative decays χb(1P)→ϒ(1S)γ and χb(2P)→ϒ(1S)γ in pp̅ collisions at √s = 1.8TeV, and measured the fraction of ϒ(1S) mesons that originate from these decays. For ϒ(1S) mesons with pTϒ>8.0GeV/c, the fractions that come from χb(1P) and χb(2P) decays are [27.1±6.9(stat)±4.4(syst)]% and [10.5±4.4(stat)±1.4(syst)]%, respectively. We have derived the fraction of directly produced ϒ(1S) mesons to be [50.9±8.2(stat)±9.0(syst)]%.
| Type: | Article |
|---|---|
| Title: | Production of Upsilon(1S) Mesons from chi(b) Decays in p anti-p Collisions at s**(1/2) = 1.8 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.84.2094 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.84.2094 |
| Language: | English |
| Additional information: | © 2000 The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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/131943 |
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