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


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Acharya S., Adamová D., Aglieri Rinella G., Agnello M., Agrawal N., Ahammed Z., ...Daha Fazla

JOURNAL OF HIGH ENERGY PHYSICS, cilt.2024, sa.5, 2024 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2024 Sayı: 5
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/jhep05(2024)317
  • Dergi Adı: JOURNAL OF HIGH ENERGY PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Hadron-Hadron Scattering, Particle and Resonance Production
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The production yields of the Sigma(1385)(+/-) and.(1530)(0) resonances are measured in pp collisions at root s = 13TeV with ALICE. The measurements are performed as a function of the charged-particle multiplicity dN(ch)/d eta , which is related to the energy density produced in the collision. The results include transverse momentum (p(T)) distributions, p(T)-integrated yields, mean transverse momenta of Sigma(1385)(+/-) and.(1530)(0), as well as ratios of the p(T)-integrated resonance yields relative to yields of other hadron species. The Sigma(1385)(+/-)/pi(+/-) and Xi(1530)(0)/ pi(+/-) 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 flat 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 Sigma(1385)(+/-) and Xi(1530)(0) production in pp collisions at root s = 13TeV.