Research output: Contribution to journal › Article › peer-review
Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0. / The BELLE collaboration.
In: Physical Review D, Vol. 96, No. 5, 051102, 01.09.2017.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0
AU - The BELLE collaboration
AU - Pal, B.
AU - Schwartz, A. J.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Aushev, T.
AU - Ayad, R.
AU - Badhrees, I.
AU - Bakich, A. M.
AU - Bansal, V.
AU - Behera, P.
AU - Berger, M.
AU - Bhardwaj, V.
AU - Biswal, J.
AU - Bobrov, A.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Červenkov, D.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, K.
AU - Choi, S. K.
AU - Choi, Y.
AU - Cinabro, D.
AU - Dash, N.
AU - Di Carlo, S.
AU - DoleŽal, Z.
AU - Drásal, Z.
AU - Eidelman, S.
AU - Ferber, T.
AU - Fulsom, B. G.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Goldenzweig, P.
AU - Guido, E.
AU - Hara, T.
AU - Hayasaka, K.
AU - Hayashii, H.
AU - Hou, W. S.
AU - Krokovny, P.
AU - Matvienko, D.
AU - Vinokurova, A.
AU - Vorobyev, V.
AU - Zhilich, V.
AU - Zhulanov, V.
N1 - Publisher Copyright: © 2017 American Physical Society.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the Ï'(4S) and Ï'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90% confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm))%, which is the most precise measurement to date.
AB - We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the Ï'(4S) and Ï'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90% confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm))%, which is the most precise measurement to date.
UR - http://www.scopus.com/inward/record.url?scp=85031086892&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.96.051102
DO - 10.1103/PhysRevD.96.051102
M3 - Article
AN - SCOPUS:85031086892
VL - 96
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 5
M1 - 051102
ER -
ID: 9892546