Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
First branching fraction measurement of the suppressed decay Ξc0 →π- Λc+. / The LHCb Collaboration; Кудрявцев, Василий Николаевич; Воробьев, Виталий Сергеевич.
в: Physical Review D, Том 102, № 7, 071101, 10.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - First branching fraction measurement of the suppressed decay Ξc0 →π- Λc+
AU - The LHCb Collaboration
AU - Aaij, R.
AU - Abellán Beteta, C.
AU - Ackernley, T.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Afsharnia, H.
AU - Aidala, C. A.
AU - Aiola, S.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Alfonso Albero, A.
AU - Aliouche, Z.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Amato, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andreassi, G.
AU - Andreianov, A.
AU - Andreotti, M.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Arzymatov, K.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Audurier, B.
AU - Bachmann, S.
AU - Bachmayer, M.
AU - Back, J. J.
AU - Baker, S.
AU - Baladron Rodriguez, P.
AU - Balagura, V.
AU - Baldini, W.
AU - Baptista Leite, J.
AU - Barlow, R. J.
AU - Barsuk, S.
AU - Barter, W.
AU - Bartolini, M.
AU - Baryshnikov, F.
AU - Basels, J. M.
AU - Bondar, A.
AU - Eidelman, S.
AU - Krokovny, P.
AU - Кудрявцев, Василий Николаевич
AU - Maltsev, T.
AU - Shekhtman, L.
AU - Воробьев, Виталий Сергеевич
N1 - Publisher Copyright: © 2020 CERN.
PY - 2020/10
Y1 - 2020/10
N2 - The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured.
AB - The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured.
UR - http://www.scopus.com/inward/record.url?scp=85096757893&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.102.071101
DO - 10.1103/PhysRevD.102.071101
M3 - Article
AN - SCOPUS:85096757893
VL - 102
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - 071101
ER -
ID: 27866364