The pT-differential cross section of ω meson production in pp collisions at √ s = 13 TeV at midrapidity (|y| < 0.5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1.6 < pT < 50 GeV/c. The meson is reconstructed via the ω → π +π −π 0 decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating ω fragmentation using a broken SU(3) model. The ω/π0 ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the pT ranges of previously available measurements. A constant ratio of C ω/π0 = 0.578 ± 0.006 (stat.) ± 0.013 (syst.) is found above a transverse momentum of 4 GeV/c, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties.

Null, N., Acharya, S., Adamová, D., Agarwal, A., Aglieri Rinella, G., Aglietta, L., et al. (2025). Measurement of ω meson production in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2025(4), 0-29 [10.1007/jhep04(2025)067].

Measurement of ω meson production in pp collisions at √s = 13 TeV

Agrawal, N.;Alici, A.;Arcelli, S.;Bellini, F.;Colocci, M.;Ercolessi, F.;Jacazio, N.;Malfattore, G.;Romanenko, G.;Rubini, N.;Scioli, G.;Strazzi, S.;Tomassini, S.;
2025

Abstract

The pT-differential cross section of ω meson production in pp collisions at √ s = 13 TeV at midrapidity (|y| < 0.5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1.6 < pT < 50 GeV/c. The meson is reconstructed via the ω → π +π −π 0 decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating ω fragmentation using a broken SU(3) model. The ω/π0 ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the pT ranges of previously available measurements. A constant ratio of C ω/π0 = 0.578 ± 0.006 (stat.) ± 0.013 (syst.) is found above a transverse momentum of 4 GeV/c, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties.
2025
Null, N., Acharya, S., Adamová, D., Agarwal, A., Aglieri Rinella, G., Aglietta, L., et al. (2025). Measurement of ω meson production in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2025(4), 0-29 [10.1007/jhep04(2025)067].
Null, Null; Acharya, S.; Adamová, D.; Agarwal, A.; Aglieri Rinella, G.; Aglietta, L.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ah...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1047858
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