TY - JOUR
T1 - Observation of the Bc+?J/?p+p0 decay
AU - Aaij, R.
AU - Abdelmotteleb, A. S.W.
AU - Abellan Beteta, C.
AU - Abudinén, F.
AU - Ackernley, T.
AU - Adams, J. A.
AU - Adefisoye, A. A.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adlarson, P.
AU - Agapopoulou, C.
AU - Aidala, C. A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Akiba, K.
AU - Albicocco, P.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Aliouche, Z.
AU - Alvarez Cartelle, P.
AU - Amalric, R.
AU - Amato, S.
AU - Amey, J. L.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andersson, M.
AU - Andreianov, A.
AU - Andreola, P.
AU - Andreotti, M.
AU - Andreou, D.
AU - Anelli, A.
AU - Ao, D.
AU - Archilli, F.
AU - Argenton, M.
AU - Arguedas Cuendis, S.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Audurier, B.
AU - Bacher, D.
AU - Bachiller Perea, I.
AU - Bachmann, S.
AU - Bachmayer, M.
AU - Back, J. J.
AU - Baladron Rodriguez, P.
AU - Balagura, V.
AU - Baldini, W.
AU - LHCb collaboration
AU - da silva Bolognani, Carolina
AU - Cámpora Pérez, Daniel Hugo
AU - de Vries, Jacco
AU - Lucio Martinez, Miriam
AU - Merk, Marcel
AU - Nicotra, Davide
AU - Onderwater, Gerco
AU - Pawley, Chris
AU - Vos, Keri
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/4/1
Y1 - 2024/4/1
N2 - The first observation of the Bc+?J/?p+p0 decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb-1, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the Bc+?J/?p+ channel is measured to be (Formula presented.) where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for B+ ? J/?K*+ and Bc+?J/?p+ decays, which are used to determine the p0 detection efficiency. The p+p0 mass spectrum is found to be consistent with the dominance of an intermediate ?+ contribution in accordance with a model based on QCD factorisation.
AB - The first observation of the Bc+?J/?p+p0 decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb-1, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the Bc+?J/?p+ channel is measured to be (Formula presented.) where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for B+ ? J/?K*+ and Bc+?J/?p+ decays, which are used to determine the p0 detection efficiency. The p+p0 mass spectrum is found to be consistent with the dominance of an intermediate ?+ contribution in accordance with a model based on QCD factorisation.
KW - B Physics
KW - Hadron-Hadron Scattering
KW - QCD
KW - Spectroscopy
U2 - 10.1007/JHEP04(2024)151
DO - 10.1007/JHEP04(2024)151
M3 - Article
SN - 1029-8479
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 4
M1 - 151
ER -