| Title: |
Measurement of Λ(1520) production in pp collisions at s=7TeV and p–Pb collisions at sNN=5.02TeV |
| Authors: |
Acharya, S; Adamová, D; Adhya, SP; Adler, A; Adolfsson, J; Aggarwal, MM; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Akindinov, A; Al-Turany, M; Alam, SN; Albuquerque, DSD; Aleksandrov, D; Alessandro, B; Alfanda, HM; Alfaro Molina, R; Ali, B; Ali, Y; Alici, A; Alkin, A; Alme, J; Alt, T; Altenkamper, L; Altsybeev, I; Anaam, MN; Andrei, C; Andreou, D; Andrews, HA; Andronic, A; Angeletti, M; Anguelov, V; Anson, C; Antičić, T; Antinori, F; Antonioli, P; Anwar, R; Apadula, N; Aphecetche, L; Appelshäuser, H; Arcelli, S; Arnaldi, R; Arratia, M; Arsene, IC; Arslandok, M; Augustinus, A; Averbeck, R; Aziz, S; Azmi, MD; Badalà, A; Baek, YW; Bagnasco, S; Bai, X; Bailhache, R; Bala, R; Baldisseri, A; Ball, M; Balouza, S; Baral, RC; Barbera, R; Barioglio, L; Barnaföldi, GG; Barnby, LS; Barret, V; Bartalini, P; Barth, K; Bartsch, E; Baruffaldi, F; Bastid, N; Basu, S; Batigne, G; Batyunya, B; Batzing, PC; Bauri, D; Alba, JL Bazo; Bearden, IG; Bedda, C; Behera, NK; Belikov, I; Bellini, F; Bellwied, R; Belyaev, V; Bencedi, G; Beole, S; Bercuci, A; Berdnikov, Y; Berenyi, D; Bertens, RA; Berzano, D; Besoiu, MG; Betev, L; Bhasin, A; Bhat, IR; Bhat, MA; Bhatt, H; Bhattacharjee, B; Bianchi, A |
| Source: |
European Physical Journal C, vol 80, iss 2 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2020 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); 0202 Atomic; Molecular; Nuclear; Particle and Plasma Physics (for); 0206 Quantum Physics (for); Nuclear & Particles Physics (science-metrix); 5101 Astronomical sciences (for-2020); 5102 Atomic; molecular and optical physics (for-2020) |
| Description: |
The production of the Λ$$\Lambda $$(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s=7TeV$$\sqrt{s} = 7\ \hbox {TeV}$$ and in p–Pb collisions at sNN=5.02TeV$$\sqrt{s_{\mathrm{NN}}} = 5.02\ \hbox {TeV}$$ for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ$$\Lambda $$(1520) →pK-$$\rightarrow \hbox {pK}^{-}$$ 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$$\pi $$, K, KS0$$\hbox {K}_{\mathrm{S}}^0$$, p, Λ$$\Lambda $$) describes the shape of the Λ$$\Lambda $$(1520) transverse momentum distribution up to 3.5GeV/c$$3.5\ \hbox {GeV}/c$$ in p–Pb collisions. In the framework of this model, this observation suggests that the Λ$$\Lambda $$(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ(1520)$$\Lambda (1520)$$ to the yield of the ground state particle Λ$$\Lambda $$ 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$$\Lambda $$(1520) yield. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt5r32f0p1; https://escholarship.org/uc/item/5r32f0p1; https://escholarship.org/content/qt5r32f0p1/qt5r32f0p1.pdf |
| DOI: |
10.1140/epjc/s10052-020-7687-2 |
| Availability: |
https://escholarship.org/uc/item/5r32f0p1; https://escholarship.org/content/qt5r32f0p1/qt5r32f0p1.pdf; https://doi.org/10.1140/epjc/s10052-020-7687-2 |
| Rights: |
public |
| Accession Number: |
edsbas.89E4509E |
| Database: |
BASE |