Wang, MZ;
Abe, K;
Abe, K;
Abe, T;
Adachi, I;
Aihara, H;
Asano, Y;
... Belle Collaboration; + view all
(2004)
Observation of B+-> p(p)over-bar pi(+), B-0 -> p(p)over-barK(0), and B+-> p(p)over-barK(*+).
PHYS REV LETT
, 92
(13)
, Article 131801. 10.1103/PhysRevLett.92.131801.
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Abstract
We report the first observation of a b-->u type charmless baryonic B decay, B+-->p (p) over bar pi(+), as well as b-->s type B-0-->p (p) over barK(0) and B+-->p (p) over barK(*+) decays. The analysis is based on a 78 fb(-1) data sample recorded on the Y(4S) resonance with the Belle detector at KEKB. We find B(B+-->p (p) over bar pi(+))=(3.06(-0.62)(+0.73)+/-0.37)x10(-6), B(B-0-->p (p) over barK(0))=(1.88(-0.60)(+0.77)+/-0.23)x10(-6), and B(B+-->p (p) over barK(*+))=(10.3(-2.8-1.7)(+3.6+1.3))x10(-6). We also update B(B+-->p (p) over barK(+))=(5.66(-0.57)(+0.67)+/-0.62)x10(-6) and present an upper limit on B(B-0-->p (p) over barK(*0)) at the 90% confidence level. A common feature of the observed decay modes is threshold peaking in baryon pair invariant mass.
| Type: | Article |
|---|---|
| Title: | Observation of B+-> p(p)over-bar pi(+), B-0 -> p(p)over-barK(0), and B+-> p(p)over-barK(*+) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.92.131801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.92.131801 |
| Language: | English |
| Additional information: | The American Physical Society |
| Keywords: | B-DECAYS, SEARCH |
| 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/1308426 |
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