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pro vyhledávání: '"Heavy meson"'
It has been recently demonstrated that lightcone distribution amplitudes (LCDAs) for a heavy meson, defined in the heavy quark limit, can be extracted by simulating quasi-distribution amplitudes on the lattice with a large meson momentum $P^z$. This
Externí odkaz:
http://arxiv.org/abs/2408.13486
Building on a previous work~\cite{Han:2024min}, we illustrate that the leading-twist light-cone distribution amplitudes (LCDAs) defined in heavy-quark effective theory (HQET) can be determined through lattice simulations of quasi-distribution amplitu
Externí odkaz:
http://arxiv.org/abs/2409.00632
Upon introducing an heavy quark in the perturbative regime of the QCD conformal window we precisely determine the associated heavy meson spectrum and wave functions in terms of the number of light flavours and mass. We then compute the conformal Isgu
Externí odkaz:
http://arxiv.org/abs/2406.09758
Feebly Interacting Particles are a commonly considered extension to the Standard Model of Particle Physics. In many theoretical frameworks these particles can explain observed physical phenomena which are in tension with the current model. \textsc{AL
Externí odkaz:
http://arxiv.org/abs/2407.08673
Autor:
Han, Xue-Ying, Hua, Jun, Ji, Xiangdong, Lü, Cai-Dian, Wang, Wei, Xu, Ji, Zhang, Qi-An, Zhao, Shuai
We present a method to compute lightcone distribution amplitudes (LCDAs) of heavy meson within heavy quark effective theory (HQET). Our method utilizes quasi distribution amplitudes (quasi-DAs) with a large momentum component $P^z$. We point out that
Externí odkaz:
http://arxiv.org/abs/2403.17492
We calculate the effective potentials of the octet baryon and heavy meson systems using the chiral effective field theory up to the next-to-leading order. We consider the contact terms, one-pseudoscalar-meson and two-pseudoscalar-meson exchange contr
Externí odkaz:
http://arxiv.org/abs/2402.00460
In this paper, we study the $R^2$ corrections to the spectral functions of heavy mesons in Gauss-Bonnet gravity. We discuss the effect of Gauss-Bonnet parameter $\lambda_{GB}$ on the 1S states and 2S states of charmonium and bottomonium. It is found
Externí odkaz:
http://arxiv.org/abs/2401.05893
Akademický článek
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Publikováno v:
Eur. Phys. J. C 83, 76 (2023)
We calculate the complete $T$ matrices of the elastic light pseudoscalar meson and heavy meson scattering to the third order in heavy meson chiral perturbation theory. We determine the low-energy constants by fitting the phase shifts and scattering l
Externí odkaz:
http://arxiv.org/abs/2205.02619
Using Heavy Meson Chiral Perturbation Theory (HMChPT), the $B^* \pi$ excited states contamination of the $B \to \pi$ vector form factors is computed to NLO in the chiral expansion and in the static limit. The results suggest that the excited states f
Externí odkaz:
http://arxiv.org/abs/2210.06863