Zobrazeno 21 - 30
of 563
pro vyhledávání: '"Geng, C. Q."'
Autor:
Hsiao, Y. K., Geng, C. Q.
We study the four-body baryonic $B\to {\bf B_1 \bar B_2}M_1 M_2$ decays with $\bf B_{1,2}$ ($M_{1,2}$) being charmless baryons (mesons). In accordance with the recent LHCb observations, each decay is considered to proceed through the $B\to M_1 M_2$ t
Externí odkaz:
http://arxiv.org/abs/1704.02722
Publikováno v:
Phys. Rev. D 95, 093001 (2017)
We study the charmless two-body decays of $b$-baryons $(\Lambda_b$, $\Xi_b^-$, $\Xi_b^0)$. We find that ${\cal B}(\Xi_b^-\to \Lambda \rho^-)=(2.08^{+0.69}_{-0.51})\times 10^{-6}$ and ${\cal B}(\Xi_b^0\to \Sigma^+ M^-)=(4.45^{+1.46}_{-1.09},11.49^{+3.
Externí odkaz:
http://arxiv.org/abs/1702.05263
Publikováno v:
Phys. Lett. B 767 (2016) 205-208
We study for the first time the three-body charmless baryonic decays $\bar B^0_s\to \bar p \Lambda M^+ (p \bar \Lambda M^-)$, with $M=\pi, K$. We find that the branching ratios of $\bar B^0_s\to (\bar p \Lambda K^+$ and $p\bar \Lambda K^-)$ and $\bar
Externí odkaz:
http://arxiv.org/abs/1612.08133
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Autor:
Hsiao, Y. K., Geng, C. Q.
Publikováno v:
Chinese Physics C41, 013101 (2017)
We study two-body $B_{(c)}\to M_c(\pi,K)$ and semileptonic $B_{c}\to M_c\ell^-\bar \nu_\ell$ decays with $M_c=(J/\psi,X_c^0)$, where $X_c^0\equiv X^0(3872)$ is regarded as the tetraquark state of $c\bar cu\bar u(d\bar d)$. With the decay constant $f_
Externí odkaz:
http://arxiv.org/abs/1607.02718
Publikováno v:
Phys. Rev. D 93, 114008 (2016)
We first study the charmless two-body $\Lambda_b$ decays with the scalar mesons as the final states and predict that ${\cal B}(\Lambda_b\to \Lambda f_0(980,1500))=(2.9\pm 0.7,12.4\pm 3.8)\times 10^{-6}$ and ${\cal B}(\Lambda_b\to p K^{*-}_0(800,1430)
Externí odkaz:
http://arxiv.org/abs/1604.04043
We study the charmless two-body $\Lambda_b\to \Lambda (\phi,\eta^{(\prime)})$ and three-body $\Lambda_b\to \Lambda K^+K^- $ decays. We obtain ${\cal B}(\Lambda_b\to \Lambda\phi)=(3.53\pm 0.24)\times 10^{-6}$ to agree with the recent LHCb measurement.
Externí odkaz:
http://arxiv.org/abs/1603.06682
Publikováno v:
Phys. Rev. D 94, 014027 (2016)
Though not considered in general, purely baryonic decays could shed light on the puzzle of the baryon number asymmetry in the universe by means of a better understanding of the baryonic nature of our matter world. As such, they constitute a yet unexp
Externí odkaz:
http://arxiv.org/abs/1603.05602
Autor:
Hsiao, Y. K., Geng, C. Q.
Publikováno v:
Phys. Lett. B 757 (2016) 47-49
We consider $X(3872)$ and $Y(4140)$ as the vector tetraquark states of $X_c^0\equiv c\bar c u\bar u(d\bar d)$ and $c\bar c s\bar s$, respectively. By connecting $\Lambda_b\to X_c^0\Lambda$ to $B^-\to X_c^0 K^-$, we predict that the branching ratios o
Externí odkaz:
http://arxiv.org/abs/1602.01236
Autor:
Hsiao, Y. K., Geng, C. Q.
Publikováno v:
Phys. Rev. D 93, 034036 (2016)
We examine the validity of the generalized factorization method and calculate the angular correlations in the charmful three-body baryonic decays of $\bar B^0\to \Lambda \bar p D^{(*)+}$. With the timelike baryonic form factors newly extracted from t
Externí odkaz:
http://arxiv.org/abs/1601.03804