Phenomenology of τ−→π−ντγ using light cone sum rules

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dc.contributor.author Bansal, Anshika
dc.contributor.author Mahajan, Namit
dc.coverage.spatial United States of America
dc.date.accessioned 2021-05-14T05:18:41Z
dc.date.available 2021-05-14T05:18:41Z
dc.date.issued 2021-03
dc.identifier.citation Bansal, Anshika and Mahajan, Namit, "Phenomenology of � ? ? � ? ? � ? using light cone sum rules", Physical Review D, DOI: 10.1103/PhysRevD.103.056017, vol. 103, no. 5, Mar. 2021. en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri https://doi.org/10.1103/PhysRevD.103.056017
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6417
dc.description.abstract We present the study of radiative tau decay ( τ − → π − ν τ γ ), computing the structure dependent contribution using light cone sum rules. This decay includes the same form factors as the radiative pion decay with the crucial difference that the momentum transfer squared, t , between the pion-photon system is positive, which makes these form factors timelike and also as t can now take values up to m 2 τ , it can produce real hadronic resonances. The analytical form for these form factors has been calculated using the light cone sum rules method and the invariant mass spectrum in the π − γ system and the decay width are presented. The structure dependent parameter, γ , the ratio of the axial vector to vector form factor is found to be in good agreement with the experimental determination.
dc.description.statementofresponsibility by Anshika Bansal 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 Form factors en_US
dc.subject Particle decays en_US
dc.subject Mesons en_US
dc.subject Tau leptons en_US
dc.subject Particles & Fields en_US
dc.title Phenomenology of τ−→π−ντγ using light cone sum rules en_US
dc.type Article en_US
dc.relation.journal Physical Review D


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