Fragmentation production of fully-charmed tetraquarks at the LHC
Fragmentation production of fully-charmed tetraquarks at the LHC
复制标题
大型强子对撞机中完全魅力四夸克的碎片产生
DOI:
10.1103/physrevd.106.114029
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发表时间:
2020-09
影响因子:
5
通讯作者:
Jia-Yue Zhang
中科院分区:
文献类型:
--
作者:
Feng Feng;Yingsheng Huang;Yu Jia;Wen-Long Sang;Xiaonu Xiong;Jia-Yue Zhang
The $X(6900)$ resonance, very recently discovered in the double-$J/\psi$ channel at LHCb experiment, has spurred intensive interest in unravelling the nature of the fully charmed tetraquark state. The aim of this paper is to present a model-independent theoretical framework to study the inclusive production of this novel species of exotic hadrons, the resonances composed of four heavy quark (commonly referred to as $T_{4c}$), at large $p_T$ in hadron collision experiments. Appealing to asymptotic freedom and the fact $m_c\gg \Lambda_{\rm QCD}$, we propose that the nonpertubative yet universal gluon-to-$T_{4c}$ fragmentation function, can be decomposed into the product of the perturbatively calculable short-distance coefficient and the long-distance NRQCD matrix elements. We compute the short-distance coefficient at lowest-order in $\alpha_s$ and velocity expansion. Adopting the diquark ansatz to roughly estimate those not-yet-known NRQCD matrix elements, together with the standard QCD factorization theorem, we predict the differential production rates for the $T_{4c/4b}(0^{++})$ and $T_{4c/4b}(2^{++})$ at large $p_T$ in $pp$ collision, which eagerly awaits the confrontation with the future LHC experiments.
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DOI:
10.1140/epjc/s10052-018-6073-9
发表时间:
2017-10
期刊:
The European Physical Journal C
影响因子:
--
作者:
M. N. Anwar;J. Ferretti;F. Guo;E. Santopinto;B. Zou
通讯作者:
M. N. Anwar;J. Ferretti;F. Guo;E. Santopinto;B. Zou
DOI:
10.1140/epjc/s10052-020-08454-1
发表时间:
2020
期刊:
Eur. Phys. J. C
影响因子:
--
作者:
Qi-Fang Lv;Dian-Yong Chen;Yu-Bing Dong
通讯作者:
Yu-Bing Dong
DOI:
10.1140/epjc/s10052-020-08579-3
发表时间:
2019-11
期刊:
The European Physical Journal C
影响因子:
--
作者:
M. A. Bedolla;M. A. Bedolla;J. Ferretti;J. Ferretti;C. D. Roberts;E. Santopinto
通讯作者:
M. A. Bedolla;M. A. Bedolla;J. Ferretti;J. Ferretti;C. D. Roberts;E. Santopinto
DOI:
10.1016/0550-3213(87)90248-3
发表时间:
1987-01
期刊:
Nuclear Physics
影响因子:
--
作者:
A. Badalyan;B. Ioffe;A. Smilga
通讯作者:
A. Badalyan;B. Ioffe;A. Smilga
DOI:
10.1051/epjconf/201818202028
发表时间:
2018-03
期刊:
arXiv: High Energy Physics - Phenomenology
影响因子:
--
作者:
Wei Chen;Hua-Xing Chen;Xiang Liu;T. Steele;Shi-Lin Zhu
通讯作者:
Wei Chen;Hua-Xing Chen;Xiang Liu;T. Steele;Shi-Lin Zhu