Zobrazeno 1 - 10
of 3 155
pro vyhledávání: '"Heavy-quark symmetry"'
Numerous exotic hadrons with heavy quarks have been reported in the experiments. In such states, symmetries of heavy quarks are considered to play a significant role. In particular, the superflavor symmetry, or also called the heavy quark anti-diquar
Externí odkaz:
http://arxiv.org/abs/2311.04695
Akademický článek
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Publikováno v:
Phys. Rev. D 107, 033004(2023)
We study the heavy quark symmetry with the homogeneous bag model (HBM) and light-front quark model (LFQM) based on the decays of $\Lambda_b^0\to\Lambda_c^+\ell^-\overline{\nu}_\ell~(\ell=e,\mu,\tau)$. In particular, we calculate various parameters in
Externí odkaz:
http://arxiv.org/abs/2210.16825
Publikováno v:
Phys. Rev. D 102, 111502 (2020)
Recently, for the first time, the BESIII Collaboration reported the strange hidden charm tetraquark states $Z_{cs}(3985)^-$ in the $K^+$ recoil-mass spectrum near the $D_{s}^{-}D^{*0}/ D_{s}^{*-}D^{0}$ mass thresholds in the processes of $e^{+}e^{-}\
Externí odkaz:
http://arxiv.org/abs/2011.08656
Autor:
Wu, Tian-Wei, Liu, Ming-Zhu, Geng, Li-Sheng, Hiyama, Emiko, Valderrama, Manuel Pavon, Wang, Wen-Ling
Both unitary chiral theories and lattice QCD simulations show that the $DK$ interaction is attractive and can form a bound state, namely, $D^*_{s0}(2317)$. Assuming the validity of the heavy antiquark-diquark symmetry (HADS), the $\Xi_{cc}\bar{K}$ in
Externí odkaz:
http://arxiv.org/abs/2004.09779
Publikováno v:
Phys. Rev. D 98, 114030 (2018)
The spectrum of heavy-hadron molecules is constrained by heavy-quark symmetry in its different manifestations. Heavy-quark spin symmetry for instance connects the properties of the ground and excited states of heavy hadrons, while heavy-antiquark-diq
Externí odkaz:
http://arxiv.org/abs/1811.03992
Publikováno v:
Phys. Rev. Lett. 121, 202001 (2018)
The heavy quark effective theory makes model independent predictions for semileptonic $\Lambda_b \to \Lambda_c$ decays in terms of a small set of parameters. No subleading Isgur-Wise function occurs at order $\Lambda_{\rm QCD}/m_{c,b}$, and only two
Externí odkaz:
http://arxiv.org/abs/1808.09464
Akademický článek
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Autor:
Eichten, Estia J., Quigg, Chris
Publikováno v:
Phys. Rev. Lett. 119, 202002 (2017)
For very heavy quarks $Q$, relations derived from heavy-quark symmetry predict the existence of novel narrow doubly heavy tetraquark states of the form $Q_iQ_j \bar q_k \bar q_l$ (subscripts label flavors), where $q$ designates a light quark. By eval
Externí odkaz:
http://arxiv.org/abs/1707.09575
Stringent relations between the $B^{(*)} \to D^{(*)} $ form factors exist in the heavy quark limit and the leading symmetry breaking corrections are known. We reconsider their uncertainty and role in the analysis of recent Belle data for $B\to D^{(*)
Externí odkaz:
http://arxiv.org/abs/1707.09509