Baryon number, lepton number, and operator dimension in the Standard Model

We prove that for a given operator in the Standard Model (SM) with baryon number ΔB and lepton number ΔL, that the operator's dimension is even (odd) if (ΔB−ΔL)/2 is even (odd). Consequently, this establishes the veracity of statements that were long observed or expected to be true, but not pro...

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Main Author: Andrew Kobach
Format: Article
Language:English
Published: Elsevier 2016-07-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269316301976
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spelling doaj-3c4ffcbbf03a40cdbacf4db76ab5f8052020-11-24T23:21:56ZengElsevierPhysics Letters B0370-26931873-24452016-07-01758C45545710.1016/j.physletb.2016.05.050Baryon number, lepton number, and operator dimension in the Standard ModelAndrew KobachWe prove that for a given operator in the Standard Model (SM) with baryon number ΔB and lepton number ΔL, that the operator's dimension is even (odd) if (ΔB−ΔL)/2 is even (odd). Consequently, this establishes the veracity of statements that were long observed or expected to be true, but not proven, e.g., operators with ΔB−ΔL=0 are of even dimension, ΔB−ΔL must be an even number, etc. These results remain true even if the SM is augmented by any number of right-handed neutrinos with ΔL=1.http://www.sciencedirect.com/science/article/pii/S0370269316301976
collection DOAJ
language English
format Article
sources DOAJ
author Andrew Kobach
spellingShingle Andrew Kobach
Baryon number, lepton number, and operator dimension in the Standard Model
Physics Letters B
author_facet Andrew Kobach
author_sort Andrew Kobach
title Baryon number, lepton number, and operator dimension in the Standard Model
title_short Baryon number, lepton number, and operator dimension in the Standard Model
title_full Baryon number, lepton number, and operator dimension in the Standard Model
title_fullStr Baryon number, lepton number, and operator dimension in the Standard Model
title_full_unstemmed Baryon number, lepton number, and operator dimension in the Standard Model
title_sort baryon number, lepton number, and operator dimension in the standard model
publisher Elsevier
series Physics Letters B
issn 0370-2693
1873-2445
publishDate 2016-07-01
description We prove that for a given operator in the Standard Model (SM) with baryon number ΔB and lepton number ΔL, that the operator's dimension is even (odd) if (ΔB−ΔL)/2 is even (odd). Consequently, this establishes the veracity of statements that were long observed or expected to be true, but not proven, e.g., operators with ΔB−ΔL=0 are of even dimension, ΔB−ΔL must be an even number, etc. These results remain true even if the SM is augmented by any number of right-handed neutrinos with ΔL=1.
url http://www.sciencedirect.com/science/article/pii/S0370269316301976
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