Gabyshev, N;
Abe, K;
Adachi, I;
Aihara, H;
Asano, Y;
Aulchenko, V;
Aushev, T;
... Belle Collaboration; + view all
(2006)
Observation of B+->Lambda(+)(c)Lambda K--(c)+ and B-0 ->Lambda(+)(c)Lambda K--(c)0 decays.
PHYS REV LETT
, 97
(20)
, Article 202003. 10.1103/PhysRevLett..97.202003.
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Abstract
We report the first measurements of the doubly charmed baryonic B decays B ->Lambda(+)(c)Lambda K--(c). The B+->Lambda(+)(c)Lambda K--(c)+ decay is observed with a branching fraction of (6.5(-0.9)(+1.0)+/- 1.1 +/- 3.4)x10(-4) and a statistical significance of 15.4 sigma. The B-0 ->Lambda(+)(c)Lambda K--(c)0 decay is observed with a branching fraction of (7.9(-2.3)(+2.9)+/- 1.2 +/- 4.1)x10(-4) and a statistical significance of 6.6 sigma. The branching fraction errors are statistical, systematic, and the error resulting from the uncertainty of the Lambda(+)(c)-> pK(-)pi(+) decay branching fraction. The analysis is based on 357 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
| Type: | Article |
|---|---|
| Title: | Observation of B+->Lambda(+)(c)Lambda K--(c)+ and B-0 ->Lambda(+)(c)Lambda K--(c)0 decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett..97.202003 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett..97.202003 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | BARYON-ANTIBARYON PAIRS, EXCLUSIVE DECAYS, SEARCH, DETECTOR, MESONS |
| 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/1308523 |
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