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- Chinese Academy of SciencesCN75 papers
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6 papers · 2 filters
Study of , , decays with perturbative QCD approach
Feng Bo Duan, Xian-Qiao Yu
We study the K, K, K decays with perturbative QCD approach (pQCD) based on factorization. The new orbitally excited charmonium…
Next-to-next-to-leading-order QCD corrections to hadronic width of pseudoscalar quarkonium
Feng Feng, Yu Jia, Wen-Long Sang
We compute the next-to-next-to-leading order (NNLO) QCD corrections to the hadronic decay rates of the pseudoscalar quarkonia, at the lowest order in velocity expansion. The validi…
Next-to-leading-order QCD corrections to
Wen-Long Sang, Wen Chen, Feng Feng +2
The associated production of Higgs boson with a hard photon at lepton collider, i.e., , is known to bear a rather small cross section in Standard Model, and can serve…
The observed resonances as pentaquark states
C. S. An, H. Chen
In present work, we investigate the spectrum of several low-lying pentaquark configurations employing the constituent quark model, within which the hyperfine interact…
Coherent helicity amplitude for sequential decays
Hong Chen, Rong-Gang Ping
We present a derivation of coherent helicity amplitudes for a particle decaying into multifinal states with nonzero spins. The results show that the coherent amplitudes introduce a…
Intrinsic light and strange quark--antiquark pairs in the proton and nonperturbative strangeness suppression
C. S. An, B. Saghai
The CLAS Collaboration recently reported measured ratios of pion and kaon electroproduction cross sections from a proton target and extracted the ratios for light and strange quark…