Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Flavor-changing neutral-current processes in gauge models and strong interactions

Journal Article · · Phys. Rev., D; (United States)

The effect of strong interactions on flavor-changing neutral-current (FCNC) processes is discussed. In order that the FCNC semileptonic process I ..-->.. F + ..nu.. + nu-bar does not take place to order G/sub F/ nor to order G/sub F/..cap alpha.., the hadronic matrix elements of weak-interaction currents must satisfy (A) approx.O (k/sup -2/) O/sup F I//sub munu/as k = (k/sup 2/ + (ik/sub 0/)/sup 2/)/sup 1/2/ ..-->.. infinity, where I and F are hadronic states of different flavors and J/sup 0//sub ..mu../and J/sup + -/..mu.. are neutral and charged weak-interaction currents, respectively, while O/sup F I//sub munu/stands for the matrix elements of finite operators. By examining conditions (A) and (B), we show that if the FCNC quark process q/sup I/ ..-->.. q/sup F/ + ..nu.. + nu-bar is suppressed to order G/sub F/ and to order G/sub F/..cap alpha.., the semileptonic process I ..-->.. F + ..nu.. + nu-bar is also suppressed to the same order, where the q/sup I//sup( F)/ quark carries the same flavor as the hadronic state I (F).

Research Organization:
The Rockefeller University, New York, New York 10021
OSTI ID:
5430725
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 16:5; ISSN PRVDA
Country of Publication:
United States
Language:
English

Similar Records

Flavor-changing neutral currents and seesaw masses for quarks
Journal Article · Tue Jan 31 23:00:00 EST 1989 · Phys. Rev. D; (United States) · OSTI ID:6395973
Formation of q{bar q} resonances in the {bar N}N system
Journal Article · Tue Oct 31 23:00:00 EST 1995 · Physics of Atomic Nuclei · OSTI ID:263673
Calculation of the QCD radiative corrections to helicity asymmetries in one-particle inclusive hadron processes
Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1986 · OSTI ID:5074982

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
COMPOSITE MODELS
DECAY
DIAGRAMS
FEYNMAN DIAGRAM
FLAVOR MODEL
GAUGE INVARIANCE
GLUON MODEL
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTONIC DECAY
LIE GROUPS
MATHEMATICAL MODELS
MATRIX ELEMENTS
NEUTRAL-CURRENT INTERACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
QUARK MODEL
STRONG INTERACTIONS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
WEAK INTERACTIONS