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Observation of Directed Flow of Hypernuclei _{Λ}
Aboona, B E; Adam, J; Adams, J R; Agakishiev, G; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Aitbaev, A; Alekseev, I; Anderson, D M; Aparin, A; Atchison, J; Averichev, G S; Bairathi, V; Baker, W; Ball Cap, J G; Barish, K; Bhagat, P; Bhasin, A; Bhatta, S; Bordyuzhin, I G; Brandenburg, J D; Brandin, A V; Cai, X Z; Caines, H; Calderón de la Barca Sánchez, M; Cebra, D; Ceska, J; Chakaberia, I; Chan, B K; Chang, Z; Chen, D; Chen, J; Chen, J H; Chen, Z; Cheng, J; Cheng, Y; Choudhury, S; Christie, W; Chu, X; Crawford, H J; Dale-Gau, G; Das, A; Daugherity, M; Dedovich, T G; Deppner, I M; Derevschikov, A A; Dhamija, A; Di Carlo, L; Didenko, L.
Affiliation
  • Aboona BE; Texas A&M University, College Station, Texas 77843.
  • Adam J; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Adams JR; Ohio State University, Columbus, Ohio 43210.
  • Agakishiev G; Joint Institute for Nuclear Research, Dubna 141 980.
  • Aggarwal I; Panjab University, Chandigarh 160014, India.
  • Aggarwal MM; Panjab University, Chandigarh 160014, India.
  • Ahammed Z; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Aitbaev A; Joint Institute for Nuclear Research, Dubna 141 980.
  • Alekseev I; Alikhanov Institute for Theoretical and Experimental Physics NRC "Kurchatov Institute," Moscow 117218.
  • Anderson DM; National Research Nuclear University MEPhI, Moscow 115409.
  • Aparin A; Texas A&M University, College Station, Texas 77843.
  • Atchison J; Joint Institute for Nuclear Research, Dubna 141 980.
  • Averichev GS; Abilene Christian University, Abilene, Texas 79699.
  • Bairathi V; Joint Institute for Nuclear Research, Dubna 141 980.
  • Baker W; Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile.
  • Ball Cap JG; University of California, Riverside, California 92521.
  • Barish K; University of Houston, Houston, Texas 77204.
  • Bhagat P; University of California, Riverside, California 92521.
  • Bhasin A; University of Jammu, Jammu 180001, India.
  • Bhatta S; University of Jammu, Jammu 180001, India.
  • Bordyuzhin IG; State University of New York, Stony Brook, New York 11794.
  • Brandenburg JD; Alikhanov Institute for Theoretical and Experimental Physics NRC "Kurchatov Institute," Moscow 117218.
  • Brandin AV; Ohio State University, Columbus, Ohio 43210.
  • Cai XZ; National Research Nuclear University MEPhI, Moscow 115409.
  • Caines H; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
  • Calderón de la Barca Sánchez M; Yale University, New Haven, Connecticut 06520.
  • Cebra D; University of California, Davis, California 95616.
  • Ceska J; University of California, Davis, California 95616.
  • Chakaberia I; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Chan BK; Lawrence Berkeley National Laboratory, Berkeley, California 94720.
  • Chang Z; University of California, Los Angeles, California 90095.
  • Chen D; Indiana University, Bloomington, Indiana 47408.
  • Chen J; University of California, Riverside, California 92521.
  • Chen JH; Shandong University, Qingdao, Shandong 266237.
  • Chen Z; Fudan University, Shanghai, 200433.
  • Cheng J; Shandong University, Qingdao, Shandong 266237.
  • Cheng Y; Tsinghua University, Beijing 100084.
  • Choudhury S; University of California, Los Angeles, California 90095.
  • Christie W; Fudan University, Shanghai, 200433.
  • Chu X; Brookhaven National Laboratory, Upton, New York 11973.
  • Crawford HJ; Brookhaven National Laboratory, Upton, New York 11973.
  • Dale-Gau G; University of California, Berkeley, California 94720.
  • Das A; University of Illinois at Chicago, Chicago, Illinois 60607.
  • Daugherity M; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Dedovich TG; Abilene Christian University, Abilene, Texas 79699.
  • Deppner IM; Joint Institute for Nuclear Research, Dubna 141 980.
  • Derevschikov AA; University of Heidelberg, Heidelberg 69120, Germany.
  • Dhamija A; NRC "Kurchatov Institute," Institute of High Energy Physics, Protvino 142281.
  • Di Carlo L; Panjab University, Chandigarh 160014, India.
  • Didenko L; Wayne State University, Detroit, Michigan 48201.
Phys Rev Lett ; 130(21): 212301, 2023 May 26.
Article in En | MEDLINE | ID: mdl-37295104
ABSTRACT
We report here the first observation of directed flow (v_{1}) of the hypernuclei _{Λ}^{3}H and _{Λ}^{4}H in mid-central Au+Au collisions at sqrt[s_{NN}]=3 GeV at RHIC. These data are taken as part of the beam energy scan program carried out by the STAR experiment. From 165×10^{6} events in 5%-40% centrality, about 8400 _{Λ}^{3}H and 5200 _{Λ}^{4}H candidates are reconstructed through two- and three-body decay channels. We observe that these hypernuclei exhibit significant directed flow. Comparing to that of light nuclei, it is found that the midrapidity v_{1} slopes of _{Λ}^{3}H and _{Λ}^{4}H follow baryon number scaling, implying that the coalescence is the dominant mechanism for these hypernuclei production in the 3 GeV Au+Au collisions.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2023 Document type: Article
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2023 Document type: Article