Novel formulations of CKM matrix renormalization

Journal Article · Thu Dec 17 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3293809· OSTI ID:21325634

Kniehl, Bernd A ^[1]; Sirlin, Alberto ^[2]

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1. II. Institut fuer Theoretische Physik, Universitaet Hamburg, Lumper Chaussee 149, 22761 Hamburg (Germany)
2. Department of Physics, New York University, 4 Washington Place, New York, NY 10003 (United States)

We review two recently proposed on-shell schemes for the renormalization of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix in the Standard Model. One first constructs gauge-independent mass counterterm matrices for the up- and down-type quarks complying with the hermiticity of the complete mass matrices. Diagonalization of the latter then leads to explicit expressions for the CKM counterterm matrix, which are gauge independent, preserve unitarity, and lead to renormalized amplitudes that are non-singular in the limit in which any two quarks become mass degenerate. One of the schemes also automatically satisfies flavor democracy.

• OSTI ID: 21325634
• Journal Information: AIP Conference Proceedings, Vol. 1182, Issue 1; Conference: 10. conference on the intersections of particle and nuclear physics, San Diego, CA (United States), 26-31 May 2009; Other Information: DOI: 10.1063/1.3293809; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
FLAVOR MODEL
KOBAYASHI-MASKAWA MATRIX
PERTURBATION THEORY
QUARKS
RENORMALIZATION
REST MASS
REVIEWS
STANDARD MODEL
SUPERSYMMETRY
UNITARITY