TRANSITIONS

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Impact of the Brink-Axel hypothesis on unique first-forbiddenβ-transitions for r-process nuclei
《Chinese Physics C》2024年第3期148-168,共21页Fakeha Farooq Jameel-Un Nabi Ramoona Shehzadi 
supported by the Higher Education Commission Pakistan through Project (0-15394/NRPU/R&D/HEC/2021)。
Key nuclear inputs for the astrophysical r-process simulations are the weak interaction rates.Consequently,the accuracy of these inputs directly affects the reliability of nucleosynthesis modeling.The majority of the ...
关键词：Brink-Axel hypothesis pn-QRPA model unique first forbiddenβ-transitions GT strength functions trans-iron nuclei R-PROCESS 
Static properties and semileptonic transitions of lowest-lying doubleheavy baryons
《Chinese Physics C》2023年第3期57-66,共10页Zahra Ghalenovi Masoumeh Moazzen Sorkhi 
Supported by Kosar University of Bojnord(Grant No.0011191444)。
The static properties and semileptonic decays of ground-state doubly heavy baryons are studied in the framework of a non-relativistic quark model.Using a phenomenological potential model,we calculate the ground-state ...
关键词：hypercentral quark model double heavy baryons semileptonic decay 
Interpretation of the Galactic gamma-ray excess with the dark matter indicated by ^(8)Be and ^(4)He anomalous transitions
《Chinese Physics C》2021年第6期15-22,共8页Lian-Bao Jia Tong Li 
The work of T.Li was Supported by the the National Natural Science Foundation of China(11975129,12035008);“the Fundamental Research Funds for the Central Universities”,Nankai University(63196013);L.-B.Jia was Supported by the Longshan academic talent research supporting program of SWUST(18LZX415)。
The long-standing Galactic center gamma-ray excess could be explained by GeV dark matter(DM)annihilation,but the DM interpretation seems to conflict with recent joint limits from different astronomical scale observati...
关键词：Galactic center gamma-ray excess Atomki anomalies dark matter 
Tensor form factors of P→P,S,V and A transitions within standard and covariant light-front approaches
《Chinese Physics C》2020年第8期46-66,共21页Qin Chang Xiao-Lin Wang Li-Ting Wang 
Supported by the National Natural Science Foundation of China(11875122);the Program for Innovative Research Team in University of Henan Province(19IRTSTHN018)。
We investigate the tensor form factors of,and A transitions within the standard light-front(SLF)and the covariant light-front(CLF)quark models(QMs).The self-consistency and Lorentz covariance of CLF QM are analyzed vi...
关键词：weak decay light-front quark model form factor 
Predictions of γ(4S)→h_b(1P,2P)π^+π^- transitions
《Chinese Physics C》2020年第2期42-50,共9页Yun-Hua Chen 
Supported in part by the Fundamental Research Funds for the Central Universities(FRF-BR-19-001A);the National Natural Science Foundation of China(11975028)
We study the contributions of intermediate bottomonium-like Zb states and the bottom meson loops in the heavy quark spin flip transitionsγ(4 S)→hb(1 P,2 P)π+π-.Depending on the constructive or destructive interfer...
关键词：QUARKONIUM exotic states nonrelativistic effective field theory 
The contribution of the first forbidden transitions to the nuclear β^--decay half-life
《Chinese Physics C》2019年第11期91-99,共9页Ji-Lin You Xiao-Ping Zhang Qi-Jun Zhi Zhong-Zhou Ren Qing-Dong Wu 
Supported by National Natural Science Foundation of China(11565010,U1731218,11761161001);the Science and Technology Fund of Guizhou Province((2015)4015,(2016)-4008));the Science and Technology Development Fund(FDCT) of Macao(020/2014/A1,008/2017/AFJ,119/2017/A3)
β-decay half-life is a key quantity for nuclear structure and nucleosynthesis studies.There exist large uncertainties in the contributions of allowed and forbidden transitions to the totalβ-decay life,which limits t...
关键词：β^--decay HALF-LIFE NUCLEOSYNTHESIS first forbidden TRANSITIONS branching ratios 
Charmonium spectroscopy and decay at CLEO-c
《Chinese Physics C》2010年第6期621-625,共5页Helmut Vogel 
Supported by the U.S. Department of Energy
We report recent results on charmonium spectroscopy and decay from the CLEO-c experiment at the Cornell electrompositron storage ring accelerator, CESR. Most of the results are based on the analysis of 54 pb-1 of lumi...
关键词：CHARMONIUM radiative decay two-body decay photon transitions higher multipoles 
On ηc line shape in charmonium transitions
《Chinese Physics C》2009年第8期617-621,共5页平荣刚 
The line shapes to observe ηc in charmonium transitions, i.e., ψ（2S）, J/ψ→γηc, are investigated. The ηc line shapes in exclusive decays or by observing the inclusive photon spectrum are given. The sensitiviti...
关键词：ηc line shape charmonium transition 
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