Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV.
A comparison of the relative yields of Υ resonances in the μ(+)μ(-) decay channel in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair of 2.76 TeV is performed with data collected with the CMS detector at the LHC. Using muons of transverse momentum above 4 GeV/c and pseudorapidity...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2011
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| _version_ | 1797092810229284864 |
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| author | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hänsel, S Hoch, M Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, H |
| author_facet | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hänsel, S Hoch, M Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, H |
| author_sort | Chatrchyan, S |
| collection | OXFORD |
| description | A comparison of the relative yields of Υ resonances in the μ(+)μ(-) decay channel in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair of 2.76 TeV is performed with data collected with the CMS detector at the LHC. Using muons of transverse momentum above 4 GeV/c and pseudorapidity below 2.4, the double ratio of the Υ(2S) and Υ(3S) excited states to the Υ(1S) ground state in Pb-Pb and pp collisions, [Υ(2S+3S)/Υ(1S)](Pb-Pb)/[Υ(2S+3S)/Υ(1S)](pp), is found to be 0.31(-0.15)(+0.19)(stat)±0.03(syst). The probability to obtain the measured value, or lower, if the true double ratio is unity, is calculated to be less than 1%. |
| first_indexed | 2024-03-07T03:51:20Z |
| format | Journal article |
| id | oxford-uuid:c15d7174-1ab4-49e8-b632-8bf001add870 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:51:20Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:c15d7174-1ab4-49e8-b632-8bf001add8702022-03-27T06:01:03ZIndications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c15d7174-1ab4-49e8-b632-8bf001add870EnglishSymplectic Elements at Oxford2011Chatrchyan, SKhachatryan, VSirunyan, ATumasyan, AAdam, WBergauer, TDragicevic, MErö, JFabjan, CFriedl, MFrühwirth, RGhete, VHammer, JHänsel, SHoch, MHörmann, NHrubec, JJeitler, MKiesenhofer, WKrammer, MLiko, DMikulec, IPernicka, MRahbaran, BRohringer, HA comparison of the relative yields of Υ resonances in the μ(+)μ(-) decay channel in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair of 2.76 TeV is performed with data collected with the CMS detector at the LHC. Using muons of transverse momentum above 4 GeV/c and pseudorapidity below 2.4, the double ratio of the Υ(2S) and Υ(3S) excited states to the Υ(1S) ground state in Pb-Pb and pp collisions, [Υ(2S+3S)/Υ(1S)](Pb-Pb)/[Υ(2S+3S)/Υ(1S)](pp), is found to be 0.31(-0.15)(+0.19)(stat)±0.03(syst). The probability to obtain the measured value, or lower, if the true double ratio is unity, is calculated to be less than 1%. |
| spellingShingle | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hänsel, S Hoch, M Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, H Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title | Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title_full | Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title_fullStr | Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title_full_unstemmed | Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title_short | Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. |
| title_sort | indications of suppression of excited υ states in pb pb collisions at √ s nn 2 76 tev |
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