0000000000384152

AUTHOR

Amarjit Soni

showing 3 related works from this author

Flavor physics in the quark sector

2010

218 páginas, 106 figuras, 89 tablas.-- arXiv:0907.5386v2.-- Report of the CKM workshop, Rome 9-13th Sep. 2008.-- et al.

QuarkParticle physicsKobayashi-Maskawa MatrixMesonField (physics)Rare Kaon DecaysHigh Energy Physics::LatticeFlavourGeneral Physics and AstronomyFOS: Physical sciencesPhysics and Astronomy(all)Determination of Cabibbo-Kobayashi & Maskawa (CKM) matrix element01 natural sciencesDirect Cp-ViolationStandard ModelTo-Leading OrderHigh Energy Physics - Phenomenology (hep-ph)Chiral Perturbation-Theory/dk/atira/pure/subjectarea/asjc/31000103 physical sciences010306 general physicsFlavorParticle Physics - PhenomenologyPhysics010308 nuclear & particles physics12.15.Hh Determination of Cabibbo-Kobayashi & Maskawa (CKM) matrix elementsHigh Energy Physics::PhenomenologyELEMENTARY PARTICLE PHYSICSFísicahep-ph13.20.Eb Decays of K mesonsQuantum numberLarge Tan-BetaSettore FIS/02 - Fisica Teorica Modelli e Metodi MatematiciHigh Energy Physics - Phenomenology13.20.He Decays of bottom mesonsB MESON[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Effective-Field-TheoryCP violationB-Meson DecaysUniversal Extra DimensionsHigh Energy Physics::ExperimentCP VIOLATIONRooted Staggered FermionsCharmed mesons (|C|>0 B=0)
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Kl3Semileptonic Form Factor from (2+1)-Flavor Lattice QCD

2008

We present the first results for the ${K}_{l3}$ form factor from simulations with $2+1$ flavors of dynamical domain wall quarks. Combining our result, namely, ${f}_{+}(0)=0.964(5)$ with the latest experimental results for ${K}_{l3}$ decays leads to $|{V}_{us}|=0.2249(14)$, reducing the uncertaintity in this important parameter. For the $O({p}^{6})$ term in the chiral expansion we obtain $\ensuremath{\Delta}f=\ensuremath{-}0.013(5)$.

QuarkPhysicsQuantum chromodynamicsParticle physics010308 nuclear & particles physicsCabibbo–Kobayashi–Maskawa matrixLattice field theoryForm factor (quantum field theory)General Physics and AstronomyLattice QCD01 natural sciencesDomain wall (magnetism)Lattice gauge theory0103 physical sciences010306 general physicsPhysical Review Letters
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Kl3form factor withNf= 2 +1 dynamical domain wall fermions

2008

We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor from simulations with 2 + 1 flavours of dynamical domain wall quarks. Simulations are performed on lattices with two different volumes and four values of the light quark mass, allowing for an extrapolation to the chiral limit. The analysis includes a thorough investigation into the sources of systematic error in our fits. After interpolating to zero momentum transfer, we obtain f+(0) = 0.964(5) (or ?f = -0.013(5)) which, when combined with the latest experimental results for Kl3 decays, leads to |Vus| = 0.2249(14).

QuarkPhysicsHistoryParticle physicsCabibbo–Kobayashi–Maskawa matrixHigh Energy Physics::LatticeMomentum transferLattice field theoryExtrapolationForm factor (quantum field theory)FermionComputer Science ApplicationsEducationDomain wall (string theory)Journal of Physics: Conference Series
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