Measurement of Sequential ? Suppression in Au+Au Collisions at sNN =200 GeV with the STAR Experiment

(STAR Collaboration)

doi:10.1103/PhysRevLett.130.112301

Measurement of Sequential ? Suppression in Au+Au Collisions at sNN =200 GeV with the STAR Experiment

(STAR Collaboration)

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

We report on measurements of sequential ? suppression in Au+Au collisions at sNN=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider (RHIC) through both the dielectron and dimuon decay channels. In the 0%-60% centrality class, the nuclear modification factors (RAA), which quantify the level of yield suppression in heavy-ion collisions compared to p+p collisions, for ?(1S) and ?(2S) are 0.40±0.03(stat)±0.03(sys)±0.09(norm) and 0.26±0.08(stat)±0.02(sys)±0.06(norm), respectively, while the upper limit of the ?(3S) RAA is 0.17 at a 95% confidence level. This provides experimental evidence that the ?(3S) is significantly more suppressed than the ?(1S) at RHIC. The level of suppression for ?(1S) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. These results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ? states.

Original language	English
Article number	112301
Journal	Physical review letters
Volume	130
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.130.112301
Publication status	Published - 2023 Mar 17

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.130.112301

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@article{d599824b558245f7bf584e4f824ea9e2,

title = "Measurement of Sequential ? Suppression in Au+Au Collisions at sNN =200 GeV with the STAR Experiment",

abstract = "We report on measurements of sequential ? suppression in Au+Au collisions at sNN=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider (RHIC) through both the dielectron and dimuon decay channels. In the 0%-60% centrality class, the nuclear modification factors (RAA), which quantify the level of yield suppression in heavy-ion collisions compared to p+p collisions, for ?(1S) and ?(2S) are 0.40±0.03(stat)±0.03(sys)±0.09(norm) and 0.26±0.08(stat)±0.02(sys)±0.06(norm), respectively, while the upper limit of the ?(3S) RAA is 0.17 at a 95% confidence level. This provides experimental evidence that the ?(3S) is significantly more suppressed than the ?(1S) at RHIC. The level of suppression for ?(1S) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. These results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ? states.",

author = "{(STAR Collaboration)} and Aboona, {B. E.} and J. Adam and L. Adamczyk and Adams, {J. R.} and I. Aggarwal and Aggarwal, {M. M.} and Z. Ahammed and Anderson, {D. M.} and Aschenauer, {E. C.} and J. Atchison and V. Bairathi and W. Baker and {Ball Cap}, {J. G.} and K. Barish and R. Bellwied and P. Bhagat and A. Bhasin and S. Bhatta and J. Bielcik and J. Bielcikova and Brandenburg, {J. D.} and Cai, {X. Z.} and H. Caines and {Calderon De La Barca Sanchez}, M. and D. Cebra and J. Ceska and I. Chakaberia and P. Chaloupka and Chan, {B. K.} and Z. Chang and D. Chen and J. Chen and Chen, {J. H.} and Z. Chen and J. Cheng and Y. Cheng and S. Choudhury and W. Christie and X. Chu and Crawford, {H. J.} and M. Csan{\'a}d and G. Dale-Gau and A. Das and M. Daugherity and Deppner, {I. M.} and A. Dhamija and {Di Carlo}, L. and L. Didenko and P. Dixit and Y. Yang",

note = "Publisher Copyright: {\textcopyright} 2023 American Physical Society. ",

year = "2023",

month = mar,

day = "17",

doi = "10.1103/PhysRevLett.130.112301",

language = "English",

volume = "130",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "11",

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TY - JOUR

T1 - Measurement of Sequential ? Suppression in Au+Au Collisions at sNN =200 GeV with the STAR Experiment

AU - (STAR Collaboration)

AU - Aboona, B. E.

AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Aggarwal, I.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Anderson, D. M.

AU - Aschenauer, E. C.

AU - Atchison, J.

AU - Bairathi, V.

AU - Baker, W.

AU - Ball Cap, J. G.

AU - Barish, K.

AU - Bellwied, R.

AU - Bhagat, P.

AU - Bhasin, A.

AU - Bhatta, S.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Brandenburg, J. D.

AU - Cai, X. Z.

AU - Caines, H.

AU - Calderon De La Barca Sanchez, M.

AU - Cebra, D.

AU - Ceska, J.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chan, B. K.

AU - Chang, Z.

AU - Chen, D.

AU - Chen, J.

AU - Chen, J. H.

AU - Chen, Z.

AU - Cheng, J.

AU - Cheng, Y.

AU - Choudhury, S.

AU - Christie, W.

AU - Chu, X.

AU - Crawford, H. J.

AU - Csanád, M.

AU - Dale-Gau, G.

AU - Das, A.

AU - Daugherity, M.

AU - Deppner, I. M.

AU - Dhamija, A.

AU - Di Carlo, L.

AU - Didenko, L.

AU - Dixit, P.

AU - Yang, Y.

PY - 2023/3/17

Y1 - 2023/3/17

N2 - We report on measurements of sequential ? suppression in Au+Au collisions at sNN=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider (RHIC) through both the dielectron and dimuon decay channels. In the 0%-60% centrality class, the nuclear modification factors (RAA), which quantify the level of yield suppression in heavy-ion collisions compared to p+p collisions, for ?(1S) and ?(2S) are 0.40±0.03(stat)±0.03(sys)±0.09(norm) and 0.26±0.08(stat)±0.02(sys)±0.06(norm), respectively, while the upper limit of the ?(3S) RAA is 0.17 at a 95% confidence level. This provides experimental evidence that the ?(3S) is significantly more suppressed than the ?(1S) at RHIC. The level of suppression for ?(1S) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. These results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ? states.

AB - We report on measurements of sequential ? suppression in Au+Au collisions at sNN=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider (RHIC) through both the dielectron and dimuon decay channels. In the 0%-60% centrality class, the nuclear modification factors (RAA), which quantify the level of yield suppression in heavy-ion collisions compared to p+p collisions, for ?(1S) and ?(2S) are 0.40±0.03(stat)±0.03(sys)±0.09(norm) and 0.26±0.08(stat)±0.02(sys)±0.06(norm), respectively, while the upper limit of the ?(3S) RAA is 0.17 at a 95% confidence level. This provides experimental evidence that the ?(3S) is significantly more suppressed than the ?(1S) at RHIC. The level of suppression for ?(1S) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. These results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ? states.

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U2 - 10.1103/PhysRevLett.130.112301

DO - 10.1103/PhysRevLett.130.112301

M3 - Article

C2 - 37001106

AN - SCOPUS:85151384471

SN - 0031-9007

VL - 130

JO - Physical review letters

JF - Physical review letters

IS - 11

M1 - 112301

ER -

Measurement of Sequential ? Suppression in Au+Au Collisions at sNN =200 GeV with the STAR Experiment

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