TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Jaimes Elles, S. J.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Rebollo De Miguel, M.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanderswood, I.
PY  - 2023
DA  - 2023//
TI  - Observation of the B0s → χc1(3872)π+π- decay
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 084
EP  - 25pp
VL  - 07
IS  - 7
PB  - Springer
KW  - B Physics
KW  - Hadron-Hadron Scattering
KW  - Quarkonium
KW  - Spectroscopy
AB  - The first observation of the B-s(0) -> (chi(c1)(3872) -> J/Psi pi(broken vertical bar) pi(-)) pi(broken vertical bar) pi(-) 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 13TeV, respectively. The ratio of branching fractions relative to the B-s(0) -> (Psi(2S) -> J/Psi pi(+) pi(-)) pi(+) pi(-) decay is measured to be [GRAPHICS] where the first uncertainty is statistical and the second systematic. The mass spectrum of the pi(+) pi(-) system recoiling against the chi(c1)(3872) meson exhibits a large contribution from B-s(0) -> chi(c1)(3872) (integral(0)(980) -> pi(+) pi(-)) decays.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2302.10629
UR  - https://doi.org/10.1007/JHEP07(2023)084
DO  - 10.1007/JHEP07(2023)084
LA  - English
N1  - WOS:001063414300001
ID  - LHCbCollaborationAaij_etal2023
ER  -