Evidence for D0-D0bar Mixing

B Aubert; Pablo Del Amo Sanchez; Matthew Barrett; Theresa Harrison; Alistair Hart; Christopher Hawkes; Alan Watson

doi:10.1103/PhysRevLett.98.211802

Evidence for D0-D0bar Mixing

B Aubert, Pablo Del Amo Sanchez, Matthew Barrett, Theresa Harrison, Alistair Hart, Christopher Hawkes, Alan Watson

Physics and Astronomy

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271 Citations (Scopus)

Abstract

We present evidence for D0-D(0) mixing in D(0)-->K(+)pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near square root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22+/-0.30(stat)+/-0.21(syst)] x 10(-3) and y(')=[9.7+/-4.4(stat)+/-3.1(syst)] x 10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R(D), the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303+/-0.016(stat)+/-0.010(syst)]%. We find no evidence for CP violation.

Original language	English
Pages (from-to)	211802
Number of pages	1
Journal	Physical Review Letters
Volume	98
Early online date	1 May 2007
DOIs	https://doi.org/10.1103/PhysRevLett.98.211802
Publication status	Published - 1 May 2007

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https://oraweb.slac.stanford.edu/pls/slacquery/BABAR_DOCUMENTS.DetailedIndex?P_BP_ID=4915

Cite this

@article{b02e43a87cf748d3a71f8235e835e2bc,

title = "Evidence for D0-D0bar Mixing",

abstract = "We present evidence for D0-D(0) mixing in D(0)-->K(+)pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near square root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22+/-0.30(stat)+/-0.21(syst)] x 10(-3) and y(')=[9.7+/-4.4(stat)+/-3.1(syst)] x 10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R(D), the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303+/-0.016(stat)+/-0.010(syst)]%. We find no evidence for CP violation.",

author = "B Aubert and {Del Amo Sanchez}, Pablo and Matthew Barrett and Theresa Harrison and Alistair Hart and Christopher Hawkes and Alan Watson",

year = "2007",

month = may,

day = "1",

doi = "10.1103/PhysRevLett.98.211802",

language = "English",

volume = "98",

pages = "211802",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society (APS)",

}

TY - JOUR

T1 - Evidence for D0-D0bar Mixing

AU - Aubert, B

AU - Del Amo Sanchez, Pablo

AU - Barrett, Matthew

AU - Harrison, Theresa

AU - Hart, Alistair

AU - Hawkes, Christopher

AU - Watson, Alan

PY - 2007/5/1

Y1 - 2007/5/1

N2 - We present evidence for D0-D(0) mixing in D(0)-->K(+)pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near square root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22+/-0.30(stat)+/-0.21(syst)] x 10(-3) and y(')=[9.7+/-4.4(stat)+/-3.1(syst)] x 10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R(D), the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303+/-0.016(stat)+/-0.010(syst)]%. We find no evidence for CP violation.

AB - We present evidence for D0-D(0) mixing in D(0)-->K(+)pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near square root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22+/-0.30(stat)+/-0.21(syst)] x 10(-3) and y(')=[9.7+/-4.4(stat)+/-3.1(syst)] x 10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R(D), the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303+/-0.016(stat)+/-0.010(syst)]%. We find no evidence for CP violation.

U2 - 10.1103/PhysRevLett.98.211802

DO - 10.1103/PhysRevLett.98.211802

M3 - Article

C2 - 17677764

SN - 1079-7114

VL - 98

SP - 211802

JO - Physical Review Letters

JF - Physical Review Letters

ER -

Evidence for D0-D0bar Mixing

Abstract

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