Measurement of chi(c1) (3872) production in proton-proton collisions at root s=8 and 13 TeV

Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellan, Gallego, FJ Abudinen, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA
et al (show 1001 more authors) (2022) Measurement of chi(c1) (3872) production in proton-proton collisions at root s=8 and 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 01 (1). 131-.

Access the full-text of this item by clicking on the Open Access link.


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 $\sqrt{s}=8$ 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, $p_{\rm T}$, and rapidity, $y$, in the kinematic range $4 < p_{\rm T} < 20$ GeV/$c$ and $2.0 < y < 4.5$. The prompt ratio is found to increase with $p_{\rm T}$ independently of $y$. The double-differential cross-section ratio of $\chi_{c1}(3872)$ relative to $\psi(2S)$ mesons between 13 and 8 TeV is also measured for the prompt component and observed to be consistent with unity, independent of $p_{\rm T}$ and centre-of-mass energy.

Item Type: Article
Additional Information: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at (LHCb public pages)
Uncontrolled Keywords: Hadron-Hadron Scattering
Depositing User: Symplectic Admin
Date Deposited: 03 Dec 2018 09:59
Last Modified: 19 Jan 2023 01:10
DOI: 10.1007/JHEP01(2022)131
Open Access URL:
Related URLs: