TY - JOUR
T1 - Evidence of a J/ψK0S Structure in B0→J/ψϕK0S Decays
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
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 - Baptista de Souza Leite, J
AU - Barbetti, M
AU - Barlow, R J
AU - Barsuk, S
AU - LHCb collaboration
AU - Merk, Marcel
AU - Pawley, Chris
AU - de Vries, Jacco
AU - Vos, Keri
AU - Cámpora Pérez, Daniel Hugo
AU - da silva Bolognani, Carolina
AU - Lucio Martinez, Miriam
AU - Nicotra, Davide
PY - 2023/9/29
Y1 - 2023/9/29
N2 - An amplitude analysis of B0→J/ψϕK0S decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard deviations of a structure in the J/ψK0S system, named Tθψs1(4000)0, is seen, with its mass and width measured to be 3991+12−10 +9−17 MeV/c2 and 105+29−25 +17−23 MeV, respectively, where the first uncertainty is statistical and the second systematic. The Tθψs1(4000)0 state is likely to be the isospin partner of the Tθψs1(4000)+ state, previously observed in the J/ψK+ system of the B+→J/ψϕK+ decay. When isospin symmetry for the charged and neutral Tθψs1(4000) states is assumed, the signal significance increases to 5.4 standard deviations.
AB - An amplitude analysis of B0→J/ψϕK0S decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard deviations of a structure in the J/ψK0S system, named Tθψs1(4000)0, is seen, with its mass and width measured to be 3991+12−10 +9−17 MeV/c2 and 105+29−25 +17−23 MeV, respectively, where the first uncertainty is statistical and the second systematic. The Tθψs1(4000)0 state is likely to be the isospin partner of the Tθψs1(4000)+ state, previously observed in the J/ψK+ system of the B+→J/ψϕK+ decay. When isospin symmetry for the charged and neutral Tθψs1(4000) states is assumed, the signal significance increases to 5.4 standard deviations.
U2 - 10.1103/PhysRevLett.131.131901
DO - 10.1103/PhysRevLett.131.131901
M3 - Article
SN - 0031-9007
VL - 131
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 131901
ER -