Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV
In relativistic heavy-ion collisions, a global spin polarization, PH, of Λ and Λ[bar] hyperons along the direction of the system angular momentum was discovered and measured across a broad range of collision energies and demonstrated a trend of increasing PH with decreasing √sNN. A splitting between...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
27 July 2023
|
| In: |
Physical review
Year: 2023, Volume: 108, Issue: 1, Pages: 1-9 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.108.014910 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.108.014910 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.108.014910 
|
| Author Notes: | STAR Collaboration* |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1879523477 | ||
| 003 | DE-627 | ||
| 005 | 20240418090617.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240130s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1103/PhysRevC.108.014910 |2 doi | |
| 035 | |a (DE-627)1879523477 | ||
| 035 | |a (DE-599)KXP1879523477 | ||
| 035 | |a (OCoLC)1425200621 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 110 | 2 | |a STAR Collaboration |e VerfasserIn |0 (DE-588)1189926229 |0 (DE-627)1668668076 |4 aut | |
| 245 | 1 | 0 | |a Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV |c STAR Collaboration* |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Global polarization of Lambda and Lambda[bar] hyperons in Au+Au collisions at square root sNN = 19.6 and 27 GeV |
| 264 | 1 | |c 27 July 2023 | |
| 300 | |b Illustrationen | ||
| 300 | |a 9 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a *STAR Collaboration: M.I. Abdulhamid, I.M. Deppner, N. Herrmann, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff [und 370 weitere Personen] | ||
| 500 | |a Im Titel steht der zweite Buchstabe Lambda mit einem Oberstrich | ||
| 500 | |a Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol | ||
| 500 | |a Gesehen am 30.01.2024 | ||
| 520 | |a In relativistic heavy-ion collisions, a global spin polarization, PH, of Λ and Λ[bar] hyperons along the direction of the system angular momentum was discovered and measured across a broad range of collision energies and demonstrated a trend of increasing PH with decreasing √sNN. A splitting between Λ and Λ[bar] polarization may be possible due to their different magnetic moments in a late-stage magnetic field sustained by the quark-gluon plasma which is formed in the collision. The results presented in this study find no significant splitting at the collision energies of √sNN=19.6 and 27 GeV in the BNL Relativistic Heavy Ion Collisions Beam Energy Scan Phase II using the STAR detector, with an upper limit of PΛ[bar]−PΛ<0.24% and PΛ[bar]−PΛ<0.35%, respectively, at a 95% confidence level. We derive an upper limit on the naive extraction of the late-stage magnetic field of B<9.4×1012 T and B<1.4×1013 T at √sNN=19.6 and 27 GeV, respectively, although more thorough derivations are needed. Differential measurements of PH were performed with respect to collision centrality, transverse momentum, and rapidity. With our current acceptance of |y|<1 and uncertainties, we observe no dependence on transverse momentum and rapidity in this analysis. These results challenge multiple existing model calculations following a variety of different assumptions which have each predicted a strong dependence on rapidity in this collision-energy range. | ||
| 700 | 1 | |a Abdulhamid, Muhammad Ibrahim |e VerfasserIn |0 (DE-588)1265140928 |0 (DE-627)1814185909 |4 aut | |
| 700 | 1 | |a Deppner, Ingo Martin |d 1974- |e VerfasserIn |0 (DE-588)1045034665 |0 (DE-627)773537198 |0 (DE-576)398347158 |4 aut | |
| 700 | 1 | |a Herrmann, Norbert |e VerfasserIn |0 (DE-588)104952098X |0 (DE-627)782234399 |0 (DE-576)403514886 |4 aut | |
| 700 | 1 | |a Leung, Yue |e VerfasserIn |0 (DE-588)1293991503 |0 (DE-627)185099031X |4 aut | |
| 700 | 1 | |a Söhngen, Yannick |e VerfasserIn |0 (DE-588)120025130X |0 (DE-627)1682536815 |4 aut | |
| 700 | 1 | |a Weidenkaff, Philipp |d 1991- |e VerfasserIn |0 (DE-588)1205030379 |0 (DE-627)1690363479 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physical review |d Woodbury, NY : Inst., 2016 |g 108(2023), 1, Artikel-ID 014910, Seite 1-9 |h Online-Ressource |w (DE-627)845674919 |w (DE-600)2844098-5 |w (DE-576)454495862 |x 2469-9993 |7 nnas |a Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV |
| 773 | 1 | 8 | |g volume:108 |g year:2023 |g number:1 |g elocationid:014910 |g pages:1-9 |g extent:9 |a Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV |
| 856 | 4 | 0 | |u https://doi.org/10.1103/PhysRevC.108.014910 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 856 | 4 | 0 | |u https://link.aps.org/doi/10.1103/PhysRevC.108.014910 |x Verlag |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20240130 | ||
| 993 | |a Article | ||
| 994 | |a 2023 | ||
| 998 | |g 1205030379 |a Weidenkaff, Philipp |m 1205030379:Weidenkaff, Philipp |d 130000 |e 130000PW1205030379 |k 0/130000/ |p 320 | ||
| 998 | |g 120025130X |a Söhngen, Yannick |m 120025130X:Söhngen, Yannick |d 130000 |d 130200 |e 130000PS120025130X |e 130200PS120025130X |k 0/130000/ |k 1/130000/130200/ |p 267 | ||
| 998 | |g 1293991503 |a Leung, Yue |m 1293991503:Leung, Yue |d 130000 |d 130200 |e 130000PL1293991503 |e 130200PL1293991503 |k 0/130000/ |k 1/130000/130200/ |p 141 | ||
| 998 | |g 104952098X |a Herrmann, Norbert |m 104952098X:Herrmann, Norbert |d 130000 |d 130200 |e 130000PH104952098X |e 130200PH104952098X |k 0/130000/ |k 1/130000/130200/ |p 91 | ||
| 998 | |g 1045034665 |a Deppner, Ingo Martin |m 1045034665:Deppner, Ingo Martin |d 130000 |d 130200 |e 130000PD1045034665 |e 130200PD1045034665 |k 0/130000/ |k 1/130000/130200/ |p 49 | ||
| 999 | |a KXP-PPN1879523477 |e 4472376180 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"title":[{"title_sort":"Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV","title":"Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeV"}],"relHost":[{"disp":"Global polarization of Λ and Λ[bar] hyperons in Au+Au collisions at √sNN=19.6 and 27 GeVPhysical review","name":{"displayForm":["publ. by The American Institute of Physics"]},"recId":"845674919","titleAlt":[{"title":"Nuclear physics"}],"corporate":[{"display":"American Institute of Physics","role":"isb"},{"display":"American Physical Society","role":"isb"}],"origin":[{"publisher":"Inst.","dateIssuedDisp":"2016-","dateIssuedKey":"2016","publisherPlace":"Woodbury, NY"}],"language":["eng"],"part":{"issue":"1","pages":"1-9","text":"108(2023), 1, Artikel-ID 014910, Seite 1-9","volume":"108","extent":"9","year":"2023"},"title":[{"title":"Physical review","title_sort":"Physical review"}],"pubHistory":["Vol. 93, Iss. 1, (January 2016)-"],"id":{"eki":["845674919"],"issn":["2469-9993"],"zdb":["2844098-5"]},"type":{"bibl":"periodical","media":"Online-Ressource"},"physDesc":[{"extent":"Online-Ressource"}]}],"physDesc":[{"extent":"9 S.","noteIll":"Illustrationen"}],"language":["eng"],"person":[{"family":"Abdulhamid","given":"Muhammad Ibrahim","display":"Abdulhamid, Muhammad Ibrahim","role":"aut"},{"role":"aut","display":"Deppner, Ingo Martin","given":"Ingo Martin","family":"Deppner"},{"family":"Herrmann","given":"Norbert","display":"Herrmann, Norbert","role":"aut"},{"given":"Yue","family":"Leung","role":"aut","display":"Leung, Yue"},{"family":"Söhngen","given":"Yannick","display":"Söhngen, Yannick","role":"aut"},{"given":"Philipp","family":"Weidenkaff","role":"aut","display":"Weidenkaff, Philipp"}],"corporate":[{"role":"aut","display":"STAR Collaboration"}],"note":["*STAR Collaboration: M.I. Abdulhamid, I.M. Deppner, N. Herrmann, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff [und 370 weitere Personen]","Im Titel steht der zweite Buchstabe Lambda mit einem Oberstrich","Im Titel steht der Ausdruck \"sNN\" unter dem Wurzelsymbol","Gesehen am 30.01.2024"],"name":{"displayForm":["STAR Collaboration*"]},"id":{"doi":["10.1103/PhysRevC.108.014910"],"eki":["1879523477"]},"type":{"bibl":"article-journal","media":"Online-Ressource"},"origin":[{"dateIssuedDisp":"27 July 2023","dateIssuedKey":"2023"}],"titleAlt":[{"title":"Global polarization of Lambda and Lambda[bar] hyperons in Au+Au collisions at square root sNN = 19.6 and 27 GeV"}],"recId":"1879523477"} | ||
| SRT | |a STARCOLLABGLOBALPOLA2720 | ||