0000000000495374
AUTHOR
Bipasha Chakraborty
showing 3 related works from this author
Improved Vcs determination using precise lattice QCD form factors for D→Kℓν
2021
We provide a 0.8%-accurate determination of Vcs from combining experimental results for the differential rate of D→K semileptonic decays with precise form factors that we determine from lattice QCD. This is the first time that Vcs has been determined with an accuracy that allows its difference from 1 to be seen. Our lattice QCD calculation uses the highly improved staggered quark (HISQ) action for all valence quarks on gluon field configurations generated by the MILC Collaboration that include the effect of u, d, s, and c HISQ quarks in the sea. We use eight gluon field ensembles with five values of the lattice spacing ranging from 0.15 fm to 0.045 fm and include results with physical u/d q…
The anomalous magnetic moment of the muon in the Standard Model
2020
We are very grateful to the Fermilab Directorate and the Fermilab Theoretical Physics Department for their financial and logistical support of the first workshop of the Muon g -2 Theory Initiative (held near Fermilab in June 2017) [123], which was crucial for its success, and indeed for the successful start of the Initiative. Financial support for this workshop was also provided by the Fermilab Distinguished Scholars program, the Universities Research Association through a URA Visiting Scholar award, the Riken Brookhaven Research Center, and the Japan Society for the Promotion of Science under Grant No. KAKEHNHI-17H02906. We thank Shoji Hashimoto, Toru Iijima, Takashi Kaneko, and Shohei Nis…
Improved Vcs determination using precise lattice QCD form factors for D → Kℓν
2021
We provide a 0.8%-accurate determination of \ud V\ud c\ud s\ud from combining experimental results for the differential rate of \ud D\ud →\ud K\ud semileptonic decays with precise form factors that we determine from lattice QCD. This is the first time that \ud V\ud c\ud s\ud has been determined with an accuracy that allows its difference from 1 to be seen. Our lattice QCD calculation uses the Highly Improved Staggered Quark (HISQ) action for all valence quarks on gluon field configurations generated by the MILC collaboration that include the effect of \ud u\ud , \ud d\ud , \ud s\ud and \ud c\ud HISQ quarks in the sea. We use eight gluon field ensembles with five values of the lattice spacin…