Production of Λ&lt;sub&gt;c&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; baryons in proton-proton and lead-lead collisions at √&lt;em&gt;s&lt;/em&gt;&lt;sub&gt;&lt;sub&gt;NN&lt;/sub&gt;&lt;/sub&gt; = 5.02 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Caminada, L.; Deiters, K.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Langenegger, U.; Rohe, T.; Wiederkehr, S.A.; Woods, N.

doi:10.1016/j.physletb.2020.135328

Production of Λ_c⁺ baryons in proton-proton and lead-lead collisions at √s_{_NN} = 5.02 TeV

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Brandstetter J, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Caminada L, Deiters K, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Wiederkehr SA, Woods N, et al.

Citation

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., … Woods, N. (2020). Production of Λ_c⁺ baryons in proton-proton and lead-lead collisions at √s_{_NN} = 5.02 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 803, 135328 (23 pp.). https://doi.org/10.1016/j.physletb.2020.135328

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:30196

The transverse momentum (p_T) spectra of inclusively produced Λ_c⁺ baryons are measured via the exclusive decay channel Λ_c⁺ → pK^-π⁺ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λ_c⁺ rapidity interval |y|<1 in the p_T range of 5-20GeV/c in pp and 10-20GeV/c in PbPb collisions. The observed yields of Λ_c⁺ for p_T of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λ_c⁺/D⁰ production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common p_T range.