TY - JOUR
T1 - A lattice QCD study of the B → ππℓ(equation presented) transition
AU - Leskovec, Luka
AU - Meinel, Stefan
AU - Petschlies, Marcus
AU - Negele, John
AU - Paul, Srijit
AU - Pochinsky, Andrew
AU - Rendon, Gumaro
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
PY - 2023/4/6
Y1 - 2023/4/6
N2 - Vub is the smallest and least known of all CKM matrix elements; the community currently determines its magnitude primarily through the exclusive process B → πℓ(equation presented). Here we present our progress toward a lattice QCD determination of the Vub matrix element from a novel transition - the B → ππℓ(equation presented) process, where the ππ system is in a P wave and scattering features the ρ(770) resonance as an enhancement. We perform our calculation on Nf = 2 + 1 isotropic clover fermions on a lattice of L ≈ 3.6 fm and a pion mass of ≈ 320 MeV; for the b-quark we use the anisotropic clover action. After a brief overview of the theoretical framework, we will discuss some preliminary results.
AB - Vub is the smallest and least known of all CKM matrix elements; the community currently determines its magnitude primarily through the exclusive process B → πℓ(equation presented). Here we present our progress toward a lattice QCD determination of the Vub matrix element from a novel transition - the B → ππℓ(equation presented) process, where the ππ system is in a P wave and scattering features the ρ(770) resonance as an enhancement. We perform our calculation on Nf = 2 + 1 isotropic clover fermions on a lattice of L ≈ 3.6 fm and a pion mass of ≈ 320 MeV; for the b-quark we use the anisotropic clover action. After a brief overview of the theoretical framework, we will discuss some preliminary results.
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M3 - Conference article
AN - SCOPUS:85153210212
SN - 1824-8039
VL - 430
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 416
T2 - 39th International Symposium on Lattice Field Theory, LATTICE 2022
Y2 - 8 August 2022 through 13 August 2022
ER -