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Title: Lessons from CLEO and FOCUS Measurements of D{sup 0}- Anti-D{sup 0} Mixing Parameters

Abstract

If the true values of the D{sup 0}--Anti-D{sup 0} mixing parameters lie within the one sigma ranges of recent measurements, then there is strong evidence for a large width difference, y approximately > 0.01, and large SU(3) breaking effects in strong phases, delta approximately > pi/4. These constraints are model independent, and would become stronger if {vert_bar}M{sub 12}/Gamma{sub 12}{vert_bar} << 1 in the D{sup 0}--Anti-D{sup 0} system. The interesting fact that the FOCUS result cannot be explained by a large mass difference is not trivial and depends on the small D{sup 0}/Anti-D{sup 0} production symmetry in FOCUS and the bounds on CP violating effects from CLEO. The large value of delta might help explain why y {approximately} sin{sup 2}Theta{sub c}.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
763778
Report Number(s):
SLAC-PUB-8457
TRN: US0004814
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 19 May 2000
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 43 PARTICLE ACCELERATORS; D NEUTRAL MESONS; ANTI-D NEUTRAL MESONS; SU-3 GROUPS; MIXING RATIO; CONFIGURATION MIXING

Citation Formats

Grossman, Yuval. Lessons from CLEO and FOCUS Measurements of D{sup 0}- Anti-D{sup 0} Mixing Parameters. United States: N. p., 2000. Web. doi:10.2172/763778.
Grossman, Yuval. Lessons from CLEO and FOCUS Measurements of D{sup 0}- Anti-D{sup 0} Mixing Parameters. United States. doi:10.2172/763778.
Grossman, Yuval. Fri . "Lessons from CLEO and FOCUS Measurements of D{sup 0}- Anti-D{sup 0} Mixing Parameters". United States. doi:10.2172/763778. https://www.osti.gov/servlets/purl/763778.
@article{osti_763778,
title = {Lessons from CLEO and FOCUS Measurements of D{sup 0}- Anti-D{sup 0} Mixing Parameters},
author = {Grossman, Yuval},
abstractNote = {If the true values of the D{sup 0}--Anti-D{sup 0} mixing parameters lie within the one sigma ranges of recent measurements, then there is strong evidence for a large width difference, y approximately > 0.01, and large SU(3) breaking effects in strong phases, delta approximately > pi/4. These constraints are model independent, and would become stronger if {vert_bar}M{sub 12}/Gamma{sub 12}{vert_bar} << 1 in the D{sup 0}--Anti-D{sup 0} system. The interesting fact that the FOCUS result cannot be explained by a large mass difference is not trivial and depends on the small D{sup 0}/Anti-D{sup 0} production symmetry in FOCUS and the bounds on CP violating effects from CLEO. The large value of delta might help explain why y {approximately} sin{sup 2}Theta{sub c}.},
doi = {10.2172/763778},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}

Technical Report:

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