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Title: Evidence for d0-anti-d0 mixing

Abstract

No abstract prepared.

Authors:
;
Publication Date:
Research Org.:
COLLABORATION - SLAC
Sponsoring Org.:
USDOE
OSTI Identifier:
927336
Report Number(s):
LBNL-63137; SLAC-PUB-12385; BABAR-PUB-07-019
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0803162
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Related Information: Journal Publication Date: 2007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; D NEUTRAL MESONS; ANTI-D NEUTRAL MESONS; MIXING RATIO

Citation Formats

Aubert, B., and BaBar Collaboration. Evidence for d0-anti-d0 mixing. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.211802.
Aubert, B., & BaBar Collaboration. Evidence for d0-anti-d0 mixing. United States. doi:10.1103/PhysRevLett.98.211802.
Aubert, B., and BaBar Collaboration. Thu . "Evidence for d0-anti-d0 mixing". United States. doi:10.1103/PhysRevLett.98.211802.
@article{osti_927336,
title = {Evidence for d0-anti-d0 mixing},
author = {Aubert, B. and BaBar Collaboration},
abstractNote = {No abstract prepared.},
doi = {10.1103/PhysRevLett.98.211802},
journal = {Physical Review Letters},
number = ,
volume = 98,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}
  • We present a preliminary search for D{sup 0}-{bar D}{sup 0} mixing using the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M} < 0.054% with 95% confidence, and we estimate that the data are consistent with nomore » mixing at a 4.5% confidence level. We present D-mixing results both with and without the assumption of CP conservation.« less
  • We present a preliminary search for D{sup 0}-{bar D}{sup 0} mixing using the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M} < 0.054% with 95% confidence, and we estimate that the data are consistent with nomore » mixing at a 4.5% confidence level. We present D-mixing results both with and without the assumption of CP conservation.« less
  • No abstract prepared.
  • We point out how, in certain models of New Physics, the same combination of couplings occurs in the amplitudes for both D{sup 0}-{bar D}{sup 0} mixing and the rare decays D{sup 0} {yields} {ell}{sup +}{ell}{sup -}. If the New Physics dominates and is responsible for the observed mixing, then a very simple correlation exists between the magnitudes of each; in fact the rates for the decay D{sup 0} {yields} {ell}{sup +}{ell}{sup -} are completely fixed by the mixing. Observation of D{sup 0} {yields} {ell}{sup +}{ell}{sup -} in excess of the Standard Model prediction could identify New Physics contributions to D{supmore » 0}-{bar D}{sup 0} mixing.« less
  • No abstract prepared.