TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
PY  - 2022
DA  - 2022//
TI  - Measurement of chi(c1) (3872) production in proton-proton collisions at root s=8 and 13 TeV
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 131
EP  - 27pp
VL  - 01
IS  - 1
PB  - Springer
KW  - Hadron-Hadron Scattering
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.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2109.07360
UR  - https://doi.org/10.1007/JHEP01(2022)131
DO  - 10.1007/JHEP01(2022)131
LA  - English
N1  - WOS:000749197000001
ID  - LHCbCollaborationAaij_etal2022
ER  -