J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector
The J/ψ p[subscript T] spectrum and nuclear modification factor (R[subscript AA]) are reported for p[subscript T] < 5GeV/c and |y| < 1 from 0% to 60% central Au + Au and Cu + Cu collisions at √s[subscript NN] = 200 GeV at STAR. A significant suppression of p[subscript T]-integrated J/ψ product...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/91210 https://orcid.org/0000-0002-0816-200X |
| _version_ | 1811088292134780928 |
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| author | Stevens, Justin van Nieuwenhuizen, Gerrit J |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Stevens, Justin van Nieuwenhuizen, Gerrit J |
| author_sort | Stevens, Justin |
| collection | MIT |
| description | The J/ψ p[subscript T] spectrum and nuclear modification factor (R[subscript AA]) are reported for p[subscript T] < 5GeV/c and |y| < 1 from 0% to 60% central Au + Au and Cu + Cu collisions at √s[subscript NN] = 200 GeV at STAR. A significant suppression of p[subscript T]-integrated J/ψ production is observed in central Au + Au events. The Cu + Cu data are consistent with no suppression, although the precision is limited by the available statistics. R[subscript AA] in Au + Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with p[subscript T]. The data are compared to high-p[subscript T] STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low p[subscript T] are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration. |
| first_indexed | 2024-09-23T13:59:53Z |
| format | Article |
| id | mit-1721.1/91210 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:59:53Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/912102023-02-26T04:22:41Z J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector Stevens, Justin van Nieuwenhuizen, Gerrit J Massachusetts Institute of Technology. Laboratory for Nuclear Science Stevens, Justin van Nieuwenhuizen, Gerrit Jan The J/ψ p[subscript T] spectrum and nuclear modification factor (R[subscript AA]) are reported for p[subscript T] < 5GeV/c and |y| < 1 from 0% to 60% central Au + Au and Cu + Cu collisions at √s[subscript NN] = 200 GeV at STAR. A significant suppression of p[subscript T]-integrated J/ψ production is observed in central Au + Au events. The Cu + Cu data are consistent with no suppression, although the precision is limited by the available statistics. R[subscript AA] in Au + Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with p[subscript T]. The data are compared to high-p[subscript T] STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low p[subscript T] are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration. Brookhaven National Laboratory Lawrence Berkeley National Laboratory United States. Dept. of Energy. Office of Nuclear Physics United States. Dept. of Energy. Office of High Energy Physics National Science Foundation (U.S.) 2014-10-29T12:22:38Z 2014-10-29T12:22:38Z 2014-08 2014-04 Article http://purl.org/eprint/type/JournalArticle 0556-2813 1089-490X http://hdl.handle.net/1721.1/91210 Adamczyk, L., J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, et al. “J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector.” Phys. Rev. C 90, no. 2 (August 2014). © 2014 American Physical Society https://orcid.org/0000-0002-0816-200X en_US http://dx.doi.org/10.1103/PhysRevC.90.024906 Physical Review C Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | Stevens, Justin van Nieuwenhuizen, Gerrit J J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title | J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title_full | J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title_fullStr | J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title_full_unstemmed | J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title_short | J/ψ Production at Low p[subscript T] in Au + Au and Cu + Cu Collisions at √s[subscript NN] = 200 GeV with the STAR Detector |
| title_sort | j ψ production at low p subscript t in au au and cu cu collisions at √s subscript nn 200 gev with the star detector |
| url | http://hdl.handle.net/1721.1/91210 https://orcid.org/0000-0002-0816-200X |
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