Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
First measurement of the Λc+ → pη′ decay. / Belle Collaboration.
в: Journal of High Energy Physics, Том 2022, № 3, 90, 03.2022.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - First measurement of the Λc+ → pη′ decay
AU - The BELLE collaboration
AU - Li, S. X.
AU - Cui, J. X.
AU - Shen, C. P.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Atmacan, H.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Behera, P.
AU - Belous, K.
AU - Bessner, M.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bilka, T.
AU - Bodrov, D.
AU - Bonvicini, G.
AU - Borah, J.
AU - Bozek, A.
AU - Bračko, M.
AU - Branchini, P.
AU - Browder, T. E.
AU - Budano, A.
AU - Campajola, M.
AU - Červenkov, D.
AU - Chang, M. C.
AU - Chang, P.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, H. E.
AU - Cho, K.
AU - Cho, S. J.
AU - Choi, S. K.
AU - Choi, Y.
AU - Choudhury, S.
AU - Cinabro, D.
AU - Cunliffe, S.
AU - Epifanov, D.
AU - Gabyshev, N.
AU - Korobov, A.
AU - Kovalenko, E.
AU - Krokovny, P.
AU - Matvienko, D.
AU - Shwartz, B.
AU - Vinokurova, A.
AU - Zhilich, V.
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2022/3
Y1 - 2022/3
N2 - We present the first measurement of the branching fraction of the singly Cabibbo-suppressed (SCS) decay Λc+→ pη′ with η′ → ηπ+π−, using a data sample corresponding to an integrated luminosity of 981 fb−1, collected by the Belle detector at the KEKB e+e− asymmetric-energy collider. A significant Λc+→ pη′ signal is observed for the first time with a signal significance of 5.4σ. The relative branching fraction with respect to the normalization mode Λc+→ pK−π+ is measured to beB(Λc+→pη′)B(Λc+→pK−π+)=(7.54±1.32±0.73)×10−3, where the uncertainties are statistical and systematic, respectively. Using the world-average value of B(Λc+→pK−π+) = (6.28 ± 0.32) × 10−2, we obtainB(Λc+→pη′)=(4.73±0.82±0.46±0.24)×10−4, where the uncertainties are statistical, systematic, and from B(Λc+→pK−π+), respectively.
AB - We present the first measurement of the branching fraction of the singly Cabibbo-suppressed (SCS) decay Λc+→ pη′ with η′ → ηπ+π−, using a data sample corresponding to an integrated luminosity of 981 fb−1, collected by the Belle detector at the KEKB e+e− asymmetric-energy collider. A significant Λc+→ pη′ signal is observed for the first time with a signal significance of 5.4σ. The relative branching fraction with respect to the normalization mode Λc+→ pK−π+ is measured to beB(Λc+→pη′)B(Λc+→pK−π+)=(7.54±1.32±0.73)×10−3, where the uncertainties are statistical and systematic, respectively. Using the world-average value of B(Λc+→pK−π+) = (6.28 ± 0.32) × 10−2, we obtainB(Λc+→pη′)=(4.73±0.82±0.46±0.24)×10−4, where the uncertainties are statistical, systematic, and from B(Λc+→pK−π+), respectively.
KW - Branching fraction
KW - Charm Physics
KW - e-e Experiments
KW - Particle and Resonance Production
UR - http://www.scopus.com/inward/record.url?scp=85133875550&partnerID=8YFLogxK
U2 - 10.1007/JHEP03(2022)090
DO - 10.1007/JHEP03(2022)090
M3 - Article
AN - SCOPUS:85133875550
VL - 2022
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1029-8479
IS - 3
M1 - 90
ER -
ID: 36704296