Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B →xsγ decays. / Belle Collaboration.
в: Physical Review D, Том 99, № 3, 032012, 20.02.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B →xsγ decays
AU - The BELLE collaboration
AU - Watanuki, S.
AU - Ishikawa, A.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Badhrees, I.
AU - Bakich, A. M.
AU - Bansal, V.
AU - Behera, P.
AU - Beleño, C.
AU - Berger, M.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bilka, T.
AU - Biswal, J.
AU - Bobrov, A.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Cao, L.
AU - Červenkov, D.
AU - Chang, P.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, K.
AU - Choi, Y.
AU - Choudhury, S.
AU - Cinabro, D.
AU - Cunliffe, S.
AU - Di Carlo, S.
AU - Dingfelder, J.
AU - Dong, T. V.
AU - Eidelman, S.
AU - Epifanov, D.
AU - Fast, J. E.
AU - Ferber, T.
AU - Frey, A.
AU - Fulsom, B. G.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Shebalin, V.
AU - Shwartz, B.
AU - Zhilich, V.
AU - Zhulanov, V.
N1 - Publisher Copyright: © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP .
PY - 2019/2/20
Y1 - 2019/2/20
N2 - We report measurements of isospin asymmetry Δ0- and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106BB̄ pairs that was collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. Using a sum-of-exclusive technique with invariant Xs mass up to 2.8 GeV/c2, we obtain Δ0-=[-0.48±1.49(stat)±0.97(syst)±1.15(f+-/f00)]% and ΔACP=[+3.69±2.65(stat)±0.76(syst)]%, where the last uncertainty for Δ0- is due to the uncertainty on the production ratio of B+B- to B0B̄0 in Ï (4S) decays. The measured value of Δ0- is consistent with zero, allowing us to constrain the resolved photon contribution in the B→Xsγ, and improve the branching fraction prediction. The result for ΔACP is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B→Xsγ decays. All the measurements are the most precise to date.
AB - We report measurements of isospin asymmetry Δ0- and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106BB̄ pairs that was collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. Using a sum-of-exclusive technique with invariant Xs mass up to 2.8 GeV/c2, we obtain Δ0-=[-0.48±1.49(stat)±0.97(syst)±1.15(f+-/f00)]% and ΔACP=[+3.69±2.65(stat)±0.76(syst)]%, where the last uncertainty for Δ0- is due to the uncertainty on the production ratio of B+B- to B0B̄0 in Ï (4S) decays. The measured value of Δ0- is consistent with zero, allowing us to constrain the resolved photon contribution in the B→Xsγ, and improve the branching fraction prediction. The result for ΔACP is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B→Xsγ decays. All the measurements are the most precise to date.
KW - VIOLATION
KW - ANNIHILATION
KW - MESON
UR - http://www.scopus.com/inward/record.url?scp=85062599280&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.99.032012
DO - 10.1103/PhysRevD.99.032012
M3 - Article
AN - SCOPUS:85062599280
VL - 99
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 3
M1 - 032012
ER -
ID: 18784898