Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond

C. M. Bouchard; E. D. Freeland; C. Bernard; A. X. El-Khadra; E. Gámiz; A. S. Kronfeld; J. Laiho; R. S. Van de Water

Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond

C. M. Bouchard, E. D. Freeland, C. Bernard, A. X. El-Khadra, E. Gámiz, A. S. Kronfeld, J. Laiho, R. S. Van de Water

Research output: Contribution to journal › Conference Article › peer-review

Abstract

We report on the status of our lattice-QCD calculation of the hadronic contribution to B⁰ _d and B⁰ _s mixing, with 2 + 1 flavors of dynamical sea quarks. Preliminary results for hadronic mixing matrix elements are given for a basis of five four-quark, dimension-six, ∆B = 2 mixing operators that spans the space of all possible hadronic mixing contributions in the Standard Model and beyond. At the intermediate stage of analysis reported on in this work, our errors are competitive with published Standard Model matrix element results. For beyond the Standard Model matrix elements, this is the first unquenched calculation and the first new lattice-QCD calculation in ten years.

Original language	English (US)
Journal	Proceedings of Science
Volume	139
State	Published - 2011
Externally published	Yes
Event	29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States Duration: Jul 10 2011 → Jul 16 2011

ASJC Scopus subject areas

General

Cite this

@article{713c9661aae64cc8893bbc2a0dd1a39e,

title = "Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond",

abstract = "We report on the status of our lattice-QCD calculation of the hadronic contribution to B0 d and B0 s mixing, with 2 + 1 flavors of dynamical sea quarks. Preliminary results for hadronic mixing matrix elements are given for a basis of five four-quark, dimension-six, ∆B = 2 mixing operators that spans the space of all possible hadronic mixing contributions in the Standard Model and beyond. At the intermediate stage of analysis reported on in this work, our errors are competitive with published Standard Model matrix element results. For beyond the Standard Model matrix elements, this is the first unquenched calculation and the first new lattice-QCD calculation in ten years.",

author = "Bouchard, {C. M.} and Freeland, {E. D.} and C. Bernard and El-Khadra, {A. X.} and E. G{\'a}miz and Kronfeld, {A. S.} and J. Laiho and {Van de Water}, {R. S.}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 29th International Symposium on Lattice Field Theory, Lattice 2011 ; Conference date: 10-07-2011 Through 16-07-2011",

year = "2011",

language = "English (US)",

volume = "139",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Neutral B mixing from 2 + 1 flavor lattice QCD

T2 - 29th International Symposium on Lattice Field Theory, Lattice 2011

AU - Bouchard, C. M.

AU - Freeland, E. D.

AU - Bernard, C.

AU - El-Khadra, A. X.

AU - Gámiz, E.

AU - Kronfeld, A. S.

AU - Laiho, J.

AU - Van de Water, R. S.

PY - 2011

Y1 - 2011

N2 - We report on the status of our lattice-QCD calculation of the hadronic contribution to B0 d and B0 s mixing, with 2 + 1 flavors of dynamical sea quarks. Preliminary results for hadronic mixing matrix elements are given for a basis of five four-quark, dimension-six, ∆B = 2 mixing operators that spans the space of all possible hadronic mixing contributions in the Standard Model and beyond. At the intermediate stage of analysis reported on in this work, our errors are competitive with published Standard Model matrix element results. For beyond the Standard Model matrix elements, this is the first unquenched calculation and the first new lattice-QCD calculation in ten years.

AB - We report on the status of our lattice-QCD calculation of the hadronic contribution to B0 d and B0 s mixing, with 2 + 1 flavors of dynamical sea quarks. Preliminary results for hadronic mixing matrix elements are given for a basis of five four-quark, dimension-six, ∆B = 2 mixing operators that spans the space of all possible hadronic mixing contributions in the Standard Model and beyond. At the intermediate stage of analysis reported on in this work, our errors are competitive with published Standard Model matrix element results. For beyond the Standard Model matrix elements, this is the first unquenched calculation and the first new lattice-QCD calculation in ten years.

UR - http://www.scopus.com/inward/record.url?scp=84881405986&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881405986&partnerID=8YFLogxK

M3 - Conference Article

AN - SCOPUS:84881405986

SN - 1824-8039

VL - 139

JO - Proceedings of Science

JF - Proceedings of Science

Y2 - 10 July 2011 through 16 July 2011

ER -

Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this