The production yields of the Σ(1385)± and Ξ(1530)0 resonances are measured in pp collisions at √ s = 13 TeV with ALICE. The measurements are performed as a function of the charged-particle multiplicity ⟨dNch/dη⟩, which is related to the energy density produced in the collision. The results include transverse momentum (pT) distributions, pT-integrated yields, mean transverse momenta of Σ(1385)± and Ξ(1530)0 , as well as ratios of the pTintegrated resonance yields relative to yields of other hadron species. The Σ(1385)±/π± and Ξ(1530)0/π± yield ratios are consistent with the trend of the enhancement of strangeness production from low to high multiplicity pp collisions, which was previously observed for strange and multi-strange baryons. The yield ratio between the measured resonances and the long-lived baryons with the same strangeness content exhibits a hint of a mild increasing trend at low multiplicity, despite too large uncertainties to exclude the fat behaviour. The results are compared with predictions from models such as EPOS-LHC and PYTHIA 8 with Rope shoving. The latter provides the best description of the multiplicity dependence of the Σ(1385)± and Ξ(1530)0 production in pp collisions at √ s = 13 TeV.

Null, N., Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2024). Multiplicity-dependent production of Σ(1385)± and Ξ(1530)0 in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2024(5), 1-35 [10.1007/jhep05(2024)317].

Multiplicity-dependent production of Σ(1385)± and Ξ(1530)0 in pp collisions at √s = 13 TeV

Alici, A.;Arcelli, S.;Bellini, F.;Carnesecchi, F.;Colocci, M.;Ercolessi, F.;Jacazio, N.;Malfattore, G.;Rubini, N.;Scioli, G.;Strazzi, S.;
2024

Abstract

The production yields of the Σ(1385)± and Ξ(1530)0 resonances are measured in pp collisions at √ s = 13 TeV with ALICE. The measurements are performed as a function of the charged-particle multiplicity ⟨dNch/dη⟩, which is related to the energy density produced in the collision. The results include transverse momentum (pT) distributions, pT-integrated yields, mean transverse momenta of Σ(1385)± and Ξ(1530)0 , as well as ratios of the pTintegrated resonance yields relative to yields of other hadron species. The Σ(1385)±/π± and Ξ(1530)0/π± yield ratios are consistent with the trend of the enhancement of strangeness production from low to high multiplicity pp collisions, which was previously observed for strange and multi-strange baryons. The yield ratio between the measured resonances and the long-lived baryons with the same strangeness content exhibits a hint of a mild increasing trend at low multiplicity, despite too large uncertainties to exclude the fat behaviour. The results are compared with predictions from models such as EPOS-LHC and PYTHIA 8 with Rope shoving. The latter provides the best description of the multiplicity dependence of the Σ(1385)± and Ξ(1530)0 production in pp collisions at √ s = 13 TeV.
2024
Null, N., Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2024). Multiplicity-dependent production of Σ(1385)± and Ξ(1530)0 in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2024(5), 1-35 [10.1007/jhep05(2024)317].
Null, Null; Acharya, S.; Adamová, D.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akindinov, A.; Al-...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1001517
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