کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5493626 | 1526767 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of γγ â J/Ïγ
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Many models to describe the nature of heavy quarkonia have been proposed and one of the ways to test them is to analyze charmonium states produced in two-photon collisions through measuring their two-photon decay width(Îγγ) and the angular distribution since they provide information on properties and internal structure of charmonium states. In this analysis, we use the decay channel γγâXâJ/Ïγ, J/Ïââ+ââ(â=eorμ) based on the 980.4 fbâ1 Belle data sample, where X is a charmonium state. Previously, Belle and CLEO collaborations have reported measurements of γγâÏc2(1P)âJ/Ïγ, J/Ïââ+ââ using 32.6 fbâ1 and 14.4 fbâ1 samples, respectively. By analyzing an about 30 times larger data sample, we can make a more precise measurement of Ïc2(1P) and other rare charmonium states including a new charmonium(-like) state. In this paper, we discuss the proposal and method of the analysis and show the result of the feasibility study using Monte Carlo (MC) samples of γγâÏc2(1P)âJ/Ïγ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear and Particle Physics Proceedings - Volumes 287â288, JuneâJuly 2017, Pages 208-211
Journal: Nuclear and Particle Physics Proceedings - Volumes 287â288, JuneâJuly 2017, Pages 208-211
نویسندگان
Y. Seino, H. Miyata, Belle collaboration Belle collaboration,