English
Related papers

Related papers: Latest Results from the SGO Collaboration

200 papers

We present {\it preliminary} results for the spectrum and decay constants of B mesons using NRQCD heavy and Wilson light quarks on configurations at $\beta=5.6$ with two dynamical flavours of staggered fermions. All terms to order $1/M_Q$…

High Energy Physics - Lattice · Physics 2010-11-01 A. Ali Khan , S. Collins , C. T. H. Davies , U. M. Heller , J. Shigemitsu , J. H. Sloan

Recent results for B meson decay constants with NRQCD b-quarks and clover light quarks are discussed. Perturbative matching factors through O($\alpha/M$) are now available and incorporated into the analyses. An O($\alpha a$) improvement…

High Energy Physics - Lattice · Physics 2016-09-01 Junko Shigemitsu

We report on a study of B mesons on N_f = 2 full QCD configurations using an RG-improved gauge action, NRQCD heavy quark action and tadpole-improved clover light quark action. Results on the heavy-light spectrum and the decay constants from…

We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole improved clover light quarks. For the first time, one-loop matching factors between lattice and continuum currents are incorporated through…

High Energy Physics - Lattice · Physics 2010-01-18 A. Ali Khan , T. Bhattacharya , S. Collins , C. T. H. Davies , R. Gupta , C. Morningstar , J. Shigemitsu , J. Sloan

We present preliminary results for the decay constant of the Bs meson, fBs, at three values of beta=5.7, 6.0 and 6.2 using NRQCD and clover fermions for the heavy and light quarks respectively. As a consistency check the decay constant has…

High Energy Physics - Lattice · Physics 2007-05-23 S. Collins , C. T. H. Davies , J. Hein , J. Shigemitsu , C. Morningstar , A. Ali Khan

We present recent results for meson decay constants calculated on configurations with two flavours of O(a)-improved Wilson fermions. Non-perturbative renormalisation is applied and quark mass dependencies as well as finite volume and…

High Energy Physics - Lattice · Physics 2016-09-01 M. Göckeler , R. Horsley , D. Pleiter , P. E. L. Rakow , G. Schierholz , W. Schroers , H. Stüben , J. M. Zanotti

We investigate the scaling behavior of the $B$ meson decay constant $f_B$ and $f_{B_{s}}$ at $\beta$$=$$5.7, 5.9, 6.1$, employing the NRQCD heavy quark action and the clover light quark action. Mixing effect from dimension-4 operator in the…

Preliminary results on spectrum and decay constant of $B$ mesons from a quenched simulation at $\beta = 6.0$ on an $16^3\times48$ lattice are discussed. The heavy quark has been implemented using both an NRQCD and the static formulation,…

High Energy Physics - Lattice · Physics 2015-06-25 A. Ali Khan , S. Collins , C. T. H. Davies , D. Henty , J. Shigemitsu , J. Sloan

We present preliminary results from our study of the heavy-light spectrum and decay constants. For the heavy quark, we use NRQCD at various masses around and above the $b$ quark mass. For the first time, the heavy quark action and the…

High Energy Physics - Lattice · Physics 2007-05-23 A. Ali Khan , T. Bhattacharya

We present comprehensive results for the spectrum and decay constants of hadrons containing a single b quark. The heavy quark is simulated using an $O(1/M)$ NRQCD action and the light quark using the $O(a)$ tadpole-improved clover action on…

High Energy Physics - Lattice · Physics 2010-01-18 S. Collins , C. T. H. Davies , U. M. Heller , A. Ali Khan , J. Shigemitsu , J. Sloan , C. Morningstar

We present results on the spectrum of B mesons and heavy baryons, using a non-relativistic formulation for the heavy and a clover action for the light quark. We also discuss B meson decay constants and their dependency upon the heavy meson…

High Energy Physics - Lattice · Physics 2010-01-18 A. Ali Khan , S. Collins , C. Davies , J. Shigemitsu , J. Sloan

We present a study of leptonic $B$ meson decay constants in lattice QCD with two flavors ($N_f=2$) of light dynamical quarks using NRQCD for the heavy quark. Gauge configurations are generated with a renormalization-group improved gauge…

We present results on the spectrum of B and D mesons including radial excitations and discuss the pseudoscalar decay constant. The results are obtained at beta=5.7 in the quenched approximation using NRQCD for the heavy quark. To study…

High Energy Physics - Lattice · Physics 2009-10-30 J. Hein , A. Ali Khan , T. Bhattacharya , S. Collins , C. T. H. Davies , R. Gupta , C. Morningstar , J. Shigemitsu , J. Sloan

We present highlights of the spectrum of mesons and baryons calculated using NRQCD for heavy quarks and tadpole improved clover action for the light quarks.

High Energy Physics - Lattice · Physics 2015-06-25 Rajan Gupta

We present an update of our calculations of the decay constants of the D, D_s, B, and B_s mesons in unquenched 2+1 flavor QCD. We use the MILC library of improved staggered gauge ensembles at lattice spacings 0.09, 0.12, and 0.15 fm, clover…

We determine the normalisation of scalar and pseudoscalar current operators made from non-relativistic $b$ quarks and Highly Improved Staggered light quarks in lattice Quantum Chromodynamics (QCD) through $\mathcal{O}(\alpha_s)$ and…

High Energy Physics - Lattice · Physics 2018-03-28 C. Hughes , C. T. H. Davies , C. J. Monahan

We present a lattice investigation of the heavy-light meson decay constants using Wilson light quarks and NRQCD heavy quarks, partially including the effects of dynamical sea quarks. We calculate the pseudoscalar and vector decay constants…

High Energy Physics - Lattice · Physics 2010-01-18 S. Collins , U. M. Heller , J. Sloan , J. Shigemitsu , A. Ali Khan , C. T. H. Davies

Neutral $B$ meson mixing matrix elements and $B$ meson decay constants are calculated. Static approximation is used for $b$ quark and domain-wall fermion formalism is employed for light quarks. The calculations are carried out on $2+1$…

High Energy Physics - Lattice · Physics 2015-06-30 Yasumichi Aoki , Tomomi Ishikawa , Taku Izubuchi , Christoph Lehner , Amarjit Soni

We present {\it preliminary} results for the decay constants of heavy-light mesons using NRQCD heavy and tadpole improved Clover light quarks. A comparison is made with data obtained using Wilson light quarks. We present an analysis of the…

High Energy Physics - Lattice · Physics 2010-01-18 S. Collins , U. M. Heller , J. Sloan , J. Shigemitsu , A. Ali-Khan , C. Davies

We present results of our quenched study of the B meson decay constant obtained with a parallel set of simulations with the Wilson and Clover actions at \beta=5.9, 6.1 and 6.3. Systematic errors associated with the large b-quark mass are…

High Energy Physics - Lattice · Physics 2011-01-27 JLQCD collaboration , S. Aoki , M. Fukugita , S. Hashimoto , N. Ishizuka , Y. Iwasaki , K. Kanaya , Y. Kuramashi , M. Okawa , A. Ukawa , T. Yoshié
‹ Prev 1 2 3 10 Next ›