TY - JOUR
T1 - Observation of the Bs0→ χc1(3872)π+π− decay
AU - The LHCb collaboration [email protected]
AU - Aaij, R.
AU - Abdelmotteleb, A. S.W.
AU - Abellan Beteta, C.
AU - Abudinén, F.
AU - Ackernley, T.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adlarson, P.
AU - Afsharnia, H.
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 - Alfonso Albero, A.
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 - Andreotti, M.
AU - Andreou, D.
AU - Ao, D.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Audurier, B.
AU - Bachiller Perea, I. B.
AU - Bachmann, S.
AU - Bachmayer, M.
AU - Back, J. J.
AU - Bailly-reyre, A.
AU - Baladron Rodriguez, P.
AU - Balagura, V.
AU - Baldini, W.
AU - Blusk, S.
AU - Rudolph, M. S.
AU - Silva Coutinho, R.
AU - Skwarnicki, T.
N1 - Publisher Copyright:
© The Author(s) 2023.
PY - 2023/7
Y1 - 2023/7
N2 - The first observation of the Bs0→ (χc1(3872) → J/ψπ+π−)π+π− decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ratio of branching fractions relative to the Bs0→ (ψ(2S) → J/ψπ+π−)π+π− decay is measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic. The mass spectrum of the π+π− system recoiling against the χc1(3872) meson exhibits a large contribution from Bs0→ χc1(3872) (f0(980) → π+π−) decays.
AB - The first observation of the Bs0→ (χc1(3872) → J/ψπ+π−)π+π− decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ratio of branching fractions relative to the Bs0→ (ψ(2S) → J/ψπ+π−)π+π− decay is measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic. The mass spectrum of the π+π− system recoiling against the χc1(3872) meson exhibits a large contribution from Bs0→ χc1(3872) (f0(980) → π+π−) decays.
KW - B Physics
KW - Hadron-Hadron Scattering
KW - Quarkonium
KW - Spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85185664407&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85185664407&partnerID=8YFLogxK
U2 - 10.1007/JHEP07(2023)084
DO - 10.1007/JHEP07(2023)084
M3 - Article
AN - SCOPUS:85185664407
SN - 1126-6708
VL - 2023
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
M1 - 84
ER -