Drutskoy, A;
Abe, K;
Abe, K;
Adachi, I;
Aihara, H;
Anipko, D;
Arinstein, K;
... Belle Collaboration; + view all
(2007)
Measurement of inclusive D-s, D-0, and J/psi rates and determination of the B-s((*)) (B)over-bar(s)((*)) production fraction in b(b)over-bar events at the Upsilon(5S) resonance.
PHYS REV LETT
, 98
(5)
, Article 052001. 10.1103/PhysRevLett.98.052001.
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Abstract
The inclusive production of D-s, D-0, and J/psi mesons is studied using a 1.86 fb(-1) data sample collected on the Y(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of bb events in this Y(5S) data sample is determined. We measure the branching fractions B(Y(5S) -> DsX)/2 = (23.6 +/- 1.2 +/- 3.6)%, B(Y(5S) -> (DX)-X-0)/2 = (53.8 +/- 2.0 +/- 3.4)%, and B(Y(5S) -> J/psi X)/2 = (1.030 +/- 0.080 +/- 0.067)%. From the D-s and D-0 inclusive branching fractions the ratio f(s) = (18.0 +/- 1.3 +/- 3.2)% of B-s((*)) B-s((*)) to the total bb quark pair production at the Y(5S) energy is obtained in a model-dependent way.
| Type: | Article |
|---|---|
| Title: | Measurement of inclusive D-s, D-0, and J/psi rates and determination of the B-s((*)) (B)over-bar(s)((*)) production fraction in b(b)over-bar events at the Upsilon(5S) resonance |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.052001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.052001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | GAMMA |
| 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1308535 |
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