Measurement of Λ (1520) production in pp collisions at √s=7TeV and p–Pb collisions at √sNN=5.02TeV
(2020) In European Physical Journal C 80(2).- Abstract
- The production of the Λ (1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s=7TeV and in p–Pb collisions at sNN=5.02TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ (1520) → pK - and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, KS0, p, Λ) describes the shape of the Λ (1520) transverse momentum... (More)
- The production of the Λ (1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s=7TeV and in p–Pb collisions at sNN=5.02TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ (1520) → pK - and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, KS0, p, Λ) describes the shape of the Λ (1520) transverse momentum distribution up to 3.5GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ (1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ (1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ (1520) yield. © 2020, CERN for the benefit of the ALICE collaboration. (Less)
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https://lup.lub.lu.se/record/eb8dcbdf-0201-492e-a4b8-50a124f925ee
- author
- Acharya, S ; Adolfsson, Jonatan LU ; Christiansen, Peter LU ; Matonoha, Oliver LU ; Nassirpour, Adrian LU ; Oskarsson, Anders LU ; Richert, Tuva LU ; Vazquez Rueda, Omar LU ; Silvermyr, David LU and Stenlund, Evert LU
- author collaboration
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 80
- issue
- 2
- article number
- 160
- publisher
- Springer
- external identifiers
-
- scopus:85079827369
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-020-7687-2
- language
- English
- LU publication?
- yes
- id
- eb8dcbdf-0201-492e-a4b8-50a124f925ee
- date added to LUP
- 2020-03-18 12:32:31
- date last changed
- 2023-04-10 09:56:16
@article{eb8dcbdf-0201-492e-a4b8-50a124f925ee, abstract = {{The production of the Λ (1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s=7TeV and in p–Pb collisions at sNN=5.02TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ (1520) → pK - and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, KS0, p, Λ) describes the shape of the Λ (1520) transverse momentum distribution up to 3.5GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ (1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ (1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ (1520) yield. © 2020, CERN for the benefit of the ALICE collaboration.}}, author = {{Acharya, S and Adolfsson, Jonatan and Christiansen, Peter and Matonoha, Oliver and Nassirpour, Adrian and Oskarsson, Anders and Richert, Tuva and Vazquez Rueda, Omar and Silvermyr, David and Stenlund, Evert}}, issn = {{1434-6044}}, language = {{eng}}, number = {{2}}, publisher = {{Springer}}, series = {{European Physical Journal C}}, title = {{Measurement of Λ (1520) production in pp collisions at √s=7TeV and p–Pb collisions at √sNN=5.02TeV}}, url = {{http://dx.doi.org/10.1140/epjc/s10052-020-7687-2}}, doi = {{10.1140/epjc/s10052-020-7687-2}}, volume = {{80}}, year = {{2020}}, }