TY - JOUR
T1 - Measurement of chi(c1) (3872) production in proton-proton collisions at root s=8 and 13 TeV
AU - Aaij, R.
AU - Abdelmotteleb, A.S.W.
AU - Beteta, C.A.
AU - Gallego, F.J.A.
AU - Ackernley, T.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Afsharnia, H.
AU - Agapopoulou, C.
AU - Aidala, C.A.
AU - Aiola, S.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Albero, A.A.
AU - Aliouche, Z.
AU - Alkhazov, G.
AU - Cartelle, P.A.
AU - Amato, S.
AU - Amey, J.L.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
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 - Rodriguez, P.B.
AU - Balagura, V.
AU - Baldini, W.
AU - Leite, J.B.
AU - Barbetti, M.
AU - Barlow, R.J.
AU - Barsuk, S.
AU - Barter, W.
AU - Bartolini, M.
AU - LHCb collaboration
AU - de Vries, J.A.
AU - Merk, M.
AU - Pawley, C.J.
AU - Vos, K.
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/1/24
Y1 - 2022/1/24
N2 - The production cross-section of the chi(c1)(3872) state relative to the psi(2S) meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of root s = 8 and 13 TeV, corresponding to integrated luminosities of 2.0 and 5.4 fb(-1), respectively. The two mesons are reconstructed in the J/psi pi(+) pi(-) final state. The ratios of the prompt and nonprompt chi(c1)(3872) to psi(2S) production cross-sections are measured as a function of transverse momentum, p(T), and rapidity, y, of the chi(c1)(3872) and psi(2S) states, in the kinematic range 4 < p(T) < 20 GeV/c and 2.0 < y < 4.5. The prompt ratio is found to increase with pT , independently of y. For the prompt component, the double ratio of the chi(c1)(3872) and psi(2S) production cross-sections between 13 and 8 TeV is observed to be consistent with unity, independent of p(T) and centre-of-mass energy.
AB - The production cross-section of the chi(c1)(3872) state relative to the psi(2S) meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of root s = 8 and 13 TeV, corresponding to integrated luminosities of 2.0 and 5.4 fb(-1), respectively. The two mesons are reconstructed in the J/psi pi(+) pi(-) final state. The ratios of the prompt and nonprompt chi(c1)(3872) to psi(2S) production cross-sections are measured as a function of transverse momentum, p(T), and rapidity, y, of the chi(c1)(3872) and psi(2S) states, in the kinematic range 4 < p(T) < 20 GeV/c and 2.0 < y < 4.5. The prompt ratio is found to increase with pT , independently of y. For the prompt component, the double ratio of the chi(c1)(3872) and psi(2S) production cross-sections between 13 and 8 TeV is observed to be consistent with unity, independent of p(T) and centre-of-mass energy.
KW - Hadron-Hadron Scattering
U2 - 10.1007/JHEP01(2022)131
DO - 10.1007/JHEP01(2022)131
M3 - Article
SN - 1029-8479
VL - 2022
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 1
M1 - 131
ER -