Drutskoy, A;
Abe, K;
Abe, K;
Abe, T;
Aihara, H;
Akatsu, M;
Asano, Y;
... Belle Collaboration; + view all
(2004)
Observation of radiative B -> phi K gamma decays.
PHYS REV LETT
, 92
(5)
, Article 051801. 10.1103/PhysRevLett.92.051801.
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Abstract
The radiative decay B-->phiKgamma is observed for the first time. The branching fraction for the charged B--->phiK(-)gamma decay mode is measured to be B(B--->phiK(-)gamma)=(3.4+/-0.9+/-0.4)x10(-6). The photon energy distribution for the B--->phiK(-)gamma decay is presented. The signal for the neutral (B) over bar (0)-->phi(K) over bar (0)gamma decay mode is not statistically significant and an upper limit, B((B) over bar (0)-->phi(K) over bar (0)gamma)<8.3x10(-6) at 90% C.L., is set. The analysis is based on a data set of 90 fb(-1) collected by the Belle experiment at the e(+)e(-) asymmetric collider KEKB.
| Type: | Article |
|---|---|
| Title: | Observation of radiative B -> phi K gamma decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.92.051801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.92.051801 |
| Language: | English |
| Additional information: | The American Physical Society |
| Keywords: | BELLE DETECTOR, B->S-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/1308421 |
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