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One-loop matching c...
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Ohlsson, Tommy,Professor,1973-KTH,Partikel- och astropartikelfysik,The Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Center, Roslagstullsbacken 21, Stockholm, SE-106 91, Sweden
(author)
One-loop matching conditions in neutrino effective theory
- Article/chapterEnglish2022
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Elsevier BV,2022
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LIBRIS-ID:oai:DiVA.org:kth-314229
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-314229URI
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https://doi.org/10.1016/j.nuclphysb.2022.115729DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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QC 20220617
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We investigate matching conditions and threshold corrections between full and effective theories based on the type I seesaw mechanism. In general, using an intuitive Feynman diagrammatical approach, we compute the amplitudes before and after integrating out heavy right-handed neutrinos at the matching scale. In particular, we derive the one-loop matching conditions between the full and the effective theories. The matching conditions of the parameters are influenced by one-loop corrections to the corresponding vertices as well as wave function corrections for the Higgs and the lepton fields. Our results are comparable to earlier results based on a functional approach.
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Pernow, MarcusKTH,Partikel- och astropartikelfysik,The Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Center, Roslagstullsbacken 21, Stockholm, SE-106 91, Sweden(Swepub:kth)u1w5thnk
(author)
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KTHPartikel- och astropartikelfysik
(creator_code:org_t)
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In:Nuclear Physics B: Elsevier BV9780550-32131873-1562
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