کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1835852 | 1527092 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quarkonia results from PHENIX
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Quarkonia results from PHENIX Quarkonia results from PHENIX](/preview/png/1835852.png)
چکیده انگلیسی
Measuring the production of multiple quarkonia states in different collision systems and over a range of energies is necessary to disentangle the effects of production in a nuclear target from those due to a hot medium. Measurements by PHENIX of J/Ï production in A+A collisions show similar levels of modification over a range of collision systems as well as energies, which might be explained by an interplay between suppression and regeneration in hot nuclear matter. Measurements of J/Ï and Ïâ² production in d+Au collisions at sNN=200 GeV have presented a number of interesting puzzles. The pT dependence of J/Ï suppression is found to be different at backward (Au-going) rapidities compared to mid and forward (d-going) rapidities. While this is unexplained by models, comparisons to the modification of heavy flavor muons show a similar discrepancy between backward and forward rapidities. The increased suppression of Ïâ² production compared to J/Ï production in central events is incompatible with either nPDF modification or nuclear breakup. However, an approximate scaling of the relative modification of the Ïâ² to the J/Ï with charged particle multiplicity between SPS p+A, PHENIX d+Au and SPS A+A is also observed, perhaps indicating that interactions with final state partons or hadrons may be important.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 932, December 2014, Pages 508-515
Journal: Nuclear Physics A - Volume 932, December 2014, Pages 508-515
نویسندگان
D. McGlinchey, PHENIX Collaboration PHENIX Collaboration,