Impact of soft photons on B→Kℓ+ℓ−

Show simple item record Mishra, Dayanand Mahajan, Namit
dc.coverage.spatial United States of America 2021-05-14T05:18:44Z 2021-05-14T05:18:44Z 2021-03
dc.identifier.citation Mishra, Dayanand and Mahajan, Namit, "Impact of soft photons on B ? K ?+ ??", Physical Review D, DOI: 10.1103/PhysRevD.103.056022, vol. 103, no. 5, Mar. 2021 en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.description.abstract We give detailed results of O ( α ) QED corrections (both real emission and virtual corrections) to B → K ℓ + ℓ − modes. Requiring the real emission to be gauge invariant, the structure of the contact term(s) is fixed. The calculation is done with a fictitious photon mass as the IR regulator and results are shown to be independent of it, establishing the cancellation of the soft divergences. Results are presented for a choice of photon energy, k max , and photon angle θ cut . The QED effects are negative, thereby reducing the rate compared to that without QED effects. Electron channels are shown to receive large corrections ( O ( 20 % ) ). Impacts on lepton flavor universality ratio R μ e K are also discussed.
dc.description.statementofresponsibility by Dayanand Mishra and Namit Mahajan
dc.format.extent vol. 103, no. 5
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.subject Flavor changing neutral currents en_US
dc.subject Quantum electrodynamics en_US
dc.subject Leptons en_US
dc.subject Mesons en_US
dc.subject Photons en_US
dc.subject Particles & Fields en_US
dc.title Impact of soft photons on B→Kℓ+ℓ− en_US
dc.type Article en_US
dc.relation.journal Physical Review D

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