Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Harrison, Judd"'
Autor:
Harrison, Judd
We compute the $\bar{h}c$ (pseudo)scalar, (axial-)vector and (axial-)tensor susceptibilities as a function of $u=m_c/m_h$ between $u=m_c/m_b$ and $u=0.8$ using fully relativistic lattice QCD, employing nonperturbative current renormalisation and usin
Externí odkaz:
http://arxiv.org/abs/2405.01390
We compute the complete set of SM and tensor $B_{(s)}\to D_{(s)}^*\ell\bar{\nu}$ semileptonic form factors across the full kinematic range of the decay using second generation MILC $n_f=2+1+1$ HISQ gluon field configurations and HISQ valence quarks,
Externí odkaz:
http://arxiv.org/abs/2304.03137
We compute the Standard Model semileptonic vector and axial-vector form factors for $B_s\to D_s^*$ decay across the full $q^2$ range using lattice QCD. We use the Highly Improved Staggered Quark (HISQ) action for all valence quarks, enabling us to no
Externí odkaz:
http://arxiv.org/abs/2105.11433
Publikováno v:
Phys. Rev. Lett. 125, 222003 (2020)
We use our lattice QCD computation of the $B_c\rightarrow J/\psi$ form factors to determine the differential decay rate for the semitauonic decay channel and construct the ratio of branching fractions $R(J/\psi) = \mathcal{B}(B_c^- \rightarrow J/\psi
Externí odkaz:
http://arxiv.org/abs/2007.06956
Publikováno v:
Phys. Rev. D 102, 094518 (2020)
We present the first lattice QCD determination of the $B_c \rightarrow J/\psi$ vector and axial-vector form factors. These will enable experimental information on the rate for $B_c$ semileptonic decays to $J/\psi$ to be converted into a value for $V_
Externí odkaz:
http://arxiv.org/abs/2007.06957
Autor:
Cooper, Laurence J., Davies, Christine T. H., Harrison, Judd, Komijani, Javad, Wingate, Matthew
Publikováno v:
Phys. Rev. D 102, 014513 (2020)
We present results of the first lattice QCD calculations of $B_c \to B_s$ and $B_c \to B_d$ weak matrix elements. Form factors across the entire physical $q^2$ range are then extracted and extrapolated to the physical-continuum limit before combining
Externí odkaz:
http://arxiv.org/abs/2003.00914
We present results of the first lattice QCD calculations of $B_c \to B_s$ and $B_c \to B_d$ weak matrix elements. Results are derived from correlation functions computed on MILC Collaboration gauge configurations with lattice spacings between $0.12$
Externí odkaz:
http://arxiv.org/abs/1911.04282
This thesis uses a variety of numerical and statistical techniques to perform high precision calculations in high energy physics using quantum field theory. It introduces the experimental motivation for the calculation of B meson form factors and inc
Externí odkaz:
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763920
Autor:
Davies, Christine T. H., Harrison, Judd, Lepage, G. Peter, Monahan, Christopher J., Shigemitsu, Junko, Wingate, Matthew
Publikováno v:
Phys. Rev. Lett. 124, 082001 (2020)
Predicting the $B_s^0-\bar{B}_s^0$ width difference $\Delta\Gamma_s$ relies on the heavy quark expansion and on hadronic matrix elements of $\Delta B=2$ operators. We present the first lattice QCD results for matrix elements of the dimension-7 operat
Externí odkaz:
http://arxiv.org/abs/1910.00970
Autor:
Davies, Christine T. H., Harrison, Judd, Hughes, Ciaran, Horgan, Ronald R., von Hippel, Georg M., Wingate, Matthew
Publikováno v:
Phys. Rev. D 99, 054502 (2019)
We improve the non-relativistic QCD (NRQCD) action by comparing the dispersion relation to that of the continuum through $\mathcal{O}(p^6)$ in perturbation theory. The one-loop matching coefficients of the $\mathcal{O}(p^4)$ kinetic operators are det
Externí odkaz:
http://arxiv.org/abs/1812.11639