Application of fragmentation function to the indirect production of fully charmed tetraquark - INSPIRE

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Application of fragmentation function to the indirect production of fully charmed tetraquark

Hong-Hao Ma
(
- Peking U., Beijing and
- Guangxi Normal U.
)
,
Zheng-Kui Tao
(
- Peking U., Beijing
)
,
Juan-Juan Niu
(
- Peking U., Beijing and
- Guangxi Normal U.
)

Feb 28, 2025

14 pages

e-Print:

2502.20891 [hep-ph]

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Abstract: (arXiv)

The indirect production mechanisms of fully charmed tetraquark are analyzed using the NRQCD factorization and Suzuki approach, respectively. The process first produces a heavy charm quark through Higgs,

W^+

, or

Z^0

decay, and then the resulting charm quark evolves into an

S

-wave fully charmed tetraquark state with quantum number

J^{PC}

, including

0^{++}

,

1^{+-}

, and

2^{++}

, via the fragmentation function. While the transverse momentum

\langle \vec{q}_T^2\rangle

in Suzuki approach ranges from 2.01 to 299.04 GeV

^2

, the numerical results obtained from these two approaches are consistent with each other. The decay widths, branching ratios, and produced events would be predicted at LHC and CEPC, respectively. The corresponding theoretical uncertainty of heavy quark mass

m_c

and distribution of energy fraction are also presented. The results show that the contribution for the production of

T_{4c}

through

W^+

decay channel at LHC is relatively large. At CEPC, a sufficient number of

T_{4c}

events are produced through

Z^0

decays, which is likely to be detected in future experiments.

Note:

14 pages, 3 figures, and 6 tables

References(74)

Figures(4)

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