کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8186250 | 1528773 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Search for muoproduction of X(3872) at COMPASS and indication of a new state XË(3872)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Search for muoproduction of X(3872) at COMPASS and indication of a new state XË(3872) Search for muoproduction of X(3872) at COMPASS and indication of a new state XË(3872)](/preview/png/8186250.png)
چکیده انگلیسی
Weâhaveâsearchedâforâexclusiveâproductionâofâexoticâcharmoniaâinâtheâreaction μ+Nâμ+(J/ÏÏ+Ïâ)ϱNâ² using COMPASS data collected with incoming muons of 160 GeV/c and 200 GeV/c momentum. In the J/ÏÏ+Ïâ mass distribution we observe a signal with a statistical significance of 4.1 Ï. Its mass and width are consistent with those of the X(3872). The shape of the Ï+Ïâ mass distribution from the observed decay into J/ÏÏ+Ïâ shows disagreement with previous observations for X(3872). The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of X(3872) with C=â1 predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into J/ÏÏ+Ïâ is determined to be 71±28(stat)±39(syst) pb.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 783, 10 August 2018, Pages 334-340
Journal: Physics Letters B - Volume 783, 10 August 2018, Pages 334-340