TY - JOUR
T1 - Radiative leptonic decays on the lattice
AU - Kane, Christopher
AU - Lehner, Christoph
AU - Meinel, Stefan
AU - Soni, Amarjit
N1 - Funding Information:
Acknowledgments: We thank the RBC and UKQCD Collaborations for providing the gauge-field configurations. C.K. and S.M. are supported by the US DOE, Office of Science, Office of HEP under award number DE-SC0009913. S.M. is also supported by the RIKEN BNL Research Center. A.S. and C.L. are supported in part by US DOE Contract No. DESC0012704(BNL). During a part of this work, C.L. was also supported by a DOE Office of Science Early Career Award. This work used resources at TACC that are part of XSEDE, supported by NSF grant number ACI-1548562.
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 - 2019
Y1 - 2019
N2 - Adding a hard photon to the final state of a leptonic pseudoscalar-meson decay lifts the helicity suppression and can provide sensitivity to a larger set of operators in the weak effective Hamiltonian. Furthermore, radiative leptonic B decays at high photon energy are well suited to constrain the first inverse moment of the B-meson light-cone distribution amplitude, an important parameter in the theory of nonleptonic B decays. We demonstrate that the calculation of radiative leptonic decays is possible using Euclidean lattice QCD, and present preliminary numerical results for D+s → `+νγ and K− → `−νγ ¯.
AB - Adding a hard photon to the final state of a leptonic pseudoscalar-meson decay lifts the helicity suppression and can provide sensitivity to a larger set of operators in the weak effective Hamiltonian. Furthermore, radiative leptonic B decays at high photon energy are well suited to constrain the first inverse moment of the B-meson light-cone distribution amplitude, an important parameter in the theory of nonleptonic B decays. We demonstrate that the calculation of radiative leptonic decays is possible using Euclidean lattice QCD, and present preliminary numerical results for D+s → `+νγ and K− → `−νγ ¯.
UR - http://www.scopus.com/inward/record.url?scp=85099534436&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85099534436&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85099534436
SN - 1824-8039
VL - 363
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 134
T2 - 37th International Symposium on Lattice Field Theory, LATTICE 2019
Y2 - 16 June 2019 through 22 June 2019
ER -