Abstract
We present measurements of the Cabibbo-suppressed decays Λ + c → Λ0K + and Λ + c → Λ0K + (both first observations), Λ + c → Λ + K + π - (seen with large statistics for the first time), Λ + c → pK + K - and Λ + c → pφ (measured with improved accuracy). Improved branching ratio measurements for the decays Λ + c → Λ + K + K - and Λ + c → Λ + φ, which are attributed to W-exchange diagrams, are shown. We also present the first evidence for {equation presented} and set an upper limit on the non-resonant decay Λ + c → Λ + K + K-. This analysis was performed using 32.6 fb-1 of data collected by the Belle detector at the asymmetric e + e - collider KEKB.
| Original language | English |
|---|---|
| Pages (from-to) | 33-43 |
| Number of pages | 11 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 524 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2002 Jan 3 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Observation of Cabibbo-suppressed and W-exchange Λc + baryon decays. / Belle Collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 524, No. 1-2, 03.01.2002, p. 33-43.Research output: Contribution to journal › Article
TY - JOUR
T1 - Observation of Cabibbo-suppressed and W-exchange Λc + baryon decays
AU - Belle Collaboration
AU - Abe, K.
AU - Abe, K.
AU - Abe, R.
AU - Abe, T.
AU - Adachi, I.
AU - Ahn, Byoung Sup
AU - Aihara, H.
AU - Akatsu, M.
AU - Asano, Y.
AU - Aso, T.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Bakich, A. M.
AU - Ban, Y.
AU - Banas, E.
AU - Behari, S.
AU - Behera, P. K.
AU - Bondar, A.
AU - Bozek, A.
AU - Browder, T. E.
AU - Casey, B. C.K.
AU - Chang, P.
AU - Chao, Y.
AU - Cheon, B. G.
AU - Chistov, R.
AU - Choi, S. K.
AU - Choi, Y.
AU - Dong, L. Y.
AU - Drutskoy, A.
AU - Eidelman, S.
AU - Eiges, V.
AU - Enari, Y.
AU - Fang, F.
AU - Fujii, H.
AU - Fukunaga, C.
AU - Fukushima, M.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Gershon, T.
AU - Gordon, A.
AU - Guo, R.
AU - Haba, J.
AU - Hamasaki, H.
AU - Handa, F.
AU - Hara, K.
AU - Hara, T.
AU - Hastings, N. C.
AU - Hayashii, H.
AU - Hazumi, M.
AU - Heenan, E. M.
PY - 2002/1/3
Y1 - 2002/1/3
N2 - We present measurements of the Cabibbo-suppressed decays Λ + c → Λ0K + and Λ + c → Λ0K + (both first observations), Λ + c → Λ + K + π - (seen with large statistics for the first time), Λ + c → pK + K - and Λ + c → pφ (measured with improved accuracy). Improved branching ratio measurements for the decays Λ + c → Λ + K + K - and Λ + c → Λ + φ, which are attributed to W-exchange diagrams, are shown. We also present the first evidence for {equation presented} and set an upper limit on the non-resonant decay Λ + c → Λ + K + K-. This analysis was performed using 32.6 fb-1 of data collected by the Belle detector at the asymmetric e + e - collider KEKB.
AB - We present measurements of the Cabibbo-suppressed decays Λ + c → Λ0K + and Λ + c → Λ0K + (both first observations), Λ + c → Λ + K + π - (seen with large statistics for the first time), Λ + c → pK + K - and Λ + c → pφ (measured with improved accuracy). Improved branching ratio measurements for the decays Λ + c → Λ + K + K - and Λ + c → Λ + φ, which are attributed to W-exchange diagrams, are shown. We also present the first evidence for {equation presented} and set an upper limit on the non-resonant decay Λ + c → Λ + K + K-. This analysis was performed using 32.6 fb-1 of data collected by the Belle detector at the asymmetric e + e - collider KEKB.
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U2 - 10.1016/S0370-2693(01)01373-9
DO - 10.1016/S0370-2693(01)01373-9
M3 - Article
AN - SCOPUS:0037011872
VL - 524
SP - 33
EP - 43
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 1-2
ER -