کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8187040 | 1528780 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Azimuthal anisotropy of charged particles with transverse momentum up to 100Â GeV/c in PbPb collisions at sNN=5.02TeV
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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: Azimuthal anisotropy of charged particles with transverse momentum up to 100Â GeV/c in PbPb collisions at sNN=5.02TeV Azimuthal anisotropy of charged particles with transverse momentum up to 100Â GeV/c in PbPb collisions at sNN=5.02TeV](/preview/png/8187040.png)
چکیده انگلیسی
The Fourier coefficients v2 and v3 characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at sNN=5.02TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 110GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v2 coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to pTâ¼60-80GeV/c, in all examined centrality classes. The v3 coefficient, only measured with the scalar product method, tends to zero for pTâ³20GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 776, 10 January 2018, Pages 195-216
Journal: Physics Letters B - Volume 776, 10 January 2018, Pages 195-216