کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8185443 | 1528089 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ï(nS) Polarization in pp Collisions at the LHC with the CMS Experiment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ï(nS) Polarization in pp Collisions at the LHC with the CMS Experiment Ï(nS) Polarization in pp Collisions at the LHC with the CMS Experiment](/preview/png/8185443.png)
چکیده انگلیسی
The polarizations of the Ï(1S), Ï(2S) and Ï(3S) mesons produced in proton-proton collisions at s=7TeV are measured using a data sample collected with the CMS detector in 2011. The data correspond to an integrated luminosity of 4.9fbâ1. The measurements are based on the analysis of the dimuon decay angular distributions, analyzed in three different polarization frames, and are presented as a function of the Ï transverse momentum in two rapidity ranges. The measurement of the polarization parameters, λθ,Î»Ï and λθÏ, is complemented by the determination of the frame-invariant quantity λ¯, which provides a useful intrinsic test of the reliability of the whole analysis chain as well as supplementary physical information. The polarizations of the three Ï states are found to be small in the considered kinematic region (10
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Proceedings Supplements - Volume 234, January 2013, Pages 117-120
Journal: Nuclear Physics B - Proceedings Supplements - Volume 234, January 2013, Pages 117-120
نویسندگان
Ilse Krätschmer, CMS Collaboration CMS Collaboration,