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Title: $$B^0_{(s)}$$-mixing matrix elements from lattice QCD for the Standard Model and beyond

Journal Article · · Physical Review D
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [7];  [8];  [9];  [10];  [11];  [6];  [12];  [13];  [12];  [14];  [15];  [12];  [12]
  1. Univ. of Iowa, Iowa City, IA (United States)
  2. Washington Univ., St. Louis, MO (United States)
  3. The College of William and Mary, Williamsburg, VA (United States)
  4. Univ. of Illinois, Urbana, IL (United States)
  5. Univ. of Utah, Salt Lake City, UT (United States)
  6. Syracuse Univ., Syracuse, NY (United States)
  7. School of the Art Institute of Chicago, Chicago, IL (United States)
  8. Univ. de Granada, Granada (Spain)
  9. Indiana Univ., Bloomington, IN (United States)
  10. American Physical Society, Ridge, NY (United States)
  11. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Technische Univ. Munchen, Garching (Germany)
  12. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  13. Univ. of Colorado, Boulder, CO (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  14. Univ. of California, Santa Barbara, CA (United States)
  15. Univ. of Arizona, Tucson, AZ (United States)

We calculate—for the first time in three-flavor lattice QCD—the hadronic matrix elements of all five local operators that contribute to neutral B0- and Bs-meson mixing in and beyond the Standard Model. In this paper, we present a complete error budget for each matrix element and also provide the full set of correlations among the matrix elements. We also present the corresponding bag parameters and their correlations, as well as specific combinations of the mixing matrix elements that enter the expression for the neutral B-meson width difference. We obtain the most precise determination to date of the SU(3)-breaking ratio ξ=1.206(18)(6), where the second error stems from the omission of charm-sea quarks, while the first encompasses all other uncertainties. The threefold reduction in total uncertainty, relative to the 2013 Flavor Lattice Averaging Group results, tightens the constraint from B mixing on the Cabibbo-Kobayashi-Maskawa (CKM) unitarity triangle. Our calculation employs gauge-field ensembles generated by the MILC Collaboration with four lattice spacings and pion masses close to the physical value. We use the asqtad-improved staggered action for the light-valence quarks and the Fermilab method for the bottom quark. We use heavy-light meson chiral perturbation theory modified to include lattice-spacing effects to extrapolate the five matrix elements to the physical point. We combine our results with experimental measurements of the neutral B-meson oscillation frequencies to determine the CKM matrix elements |Vtd|=8.00(34)(8)×10-3, |Vts|=39.0(1.2)(0.4)×10-3, and |Vtd/Vts|=0.2052(31)(10), which differ from CKM-unitarity expectations by about 2σ. Lastly, these results and others from flavor-changing-neutral currents point towards an emerging tension between weak processes that are mediated at the loop and tree levels.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States). RIKEN Research Center
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Fermilab Lattice; MILC; Fermilab Lattice and MILC Collaborations
Grant/Contract Number:
AC02-07CH11359; FG02-91ER40628; FC02-06ER41446; SC0010120; SC0010005; FG02-91ER40661; FG02-13ER42001; FG02-13ER41976; SC0012704; SC00112704
OSTI ID:
1260383
Alternate ID(s):
OSTI ID: 1259736; OSTI ID: 1336071
Report Number(s):
FERMILAB-PUB-16-030-T; arXiv:1602.03560; BNL-112445-2016-JA; PRVDAQ; 1421164
Journal Information:
Physical Review D, Vol. 93, Issue 11; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 112 works
Citation information provided by
Web of Science

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Measurement of the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mtext>–</mml:mtext><mml:msup><mml:mrow><mml:mover accent="true"><mml:mi>B</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:math> oscillation frequency <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">Δ</mml:mi><mml:msub><mml:mrow><mml:mi>m</mml:mi></mml:mrow><mml:mrow><mml:mi>d</mml:mi></mml:mrow></mml:msub></mml:math> with the decays <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math> and <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>⁎</mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:math> journal February 2013
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Precision measurement of the B 0 s –$\overline{\rm B}{}^0_{\rm s}$ oscillation frequency with the decay B 0 s → D s π + journal May 2013
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Measurement of the C P -violating phase ϕ s J / ψ ϕ using the flavor-tagged decay B s 0 J / ψ ϕ in 8 fb 1 of p p ¯ collisions journal February 2012
Flavor tagged time-dependent angular analysis of the B s 0 J / ψ ϕ decay and extraction of Δ Γ s and the weak phase ϕ s in ATLAS journal September 2014
Measurement of the CP-violating weak phase ϕs and the decay width difference ΔΓs using the B s 0 J / ψ ϕ ( 1020 ) decay channel in pp collisions at s = 8  TeV journal June 2016
Phenomenology of semileptonic B -meson decays with form factors from lattice QCD journal February 2016
Differential branching fractions and isospin asymmetries of B → K (*) μ + μ − decays journal June 2014
First measurement of the differential branching fraction and CP asymmetry of the B ± → π ± μ + μ − decay journal October 2015
B π l l Form Factors for New Physics Searches from Lattice QCD journal October 2015
Relations between ΔMs,d and Bs,d→μμ̄ in models with minimal flavour violation journal July 2003
Three-loop QCD corrections to B s → μ + μ − journal December 2013
Branching ratio measurements of B s decays journal July 2012
Probing New Physics via the B s 0 μ + μ Effective Lifetime journal July 2012
Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data journal May 2015
2000 CKM-triangle analysis a critical review with updated experimental inputs and theoretical parameters journal July 2001
A new approach to a global fit of the CKM matrix journal June 2001
Remark on the theoretical uncertainty in B0– mixing journal September 2002
B D ν form factors at nonzero recoil and | V c b | from 2 + 1 -flavor lattice QCD journal August 2015
Measurement of the decay B D ν in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element | V c b | journal February 2016
Measurements of the semileptonic decays B ¯ D ν ¯ and B ¯ D * ν ¯ using a global fit to D X ν ¯ final states journal January 2009
ϵ K at next-to-next-to-leading order: The charm-top-quark contribution journal November 2010
Next-to-Next-to-Leading-Order Charm-Quark Contribution to the C P Violation Parameter ϵ K and Δ M K journal March 2012
Lattice QCD inputs to the CKM unitarity triangle analysis journal February 2010
Highly improved staggered quarks on the lattice with applications to charm physics journal March 2007
Properties and uses of the Wilson flow in lattice QCD journal August 2010
Erratum: Properties and uses of the Wilson flow in lattice QCD journal March 2014
High-precision scale setting in lattice QCD journal September 2012
Gradient flow and scale setting on MILC HISQ ensembles journal May 2016
Charmed and light pseudoscalar meson decay constants from four-flavor lattice QCD with physical light quarks journal October 2014
Measurement of Form-Factor-Independent Observables in the Decay B 0 K * 0 μ + μ journal November 2013
Test of Lepton Universality Using B + K + + Decays journal October 2014
Measurements of the $B^+$, $B^0$, $B_s^0$ meson and $\Lambda_b^0$ baryon lifetimes text January 2014
Implications of LHCb measurements and future prospects text January 2013
Continuum limit and improved action in lattice theories journal September 1983
Measurement of the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msubsup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:msubsup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup></mml:math> branching fraction journal July 2012
Measurement of the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>t</mml:mi><mml:mover accent="true"><mml:mi>t</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> production cross section in <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> collisions at <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> using lepton+jets events with lifetime b-tagging journal October 2005
Review of Particle Physics text January 2012
Flavor tagged time-dependent angular analysis of the B0s → J/ψΦ decay and extraction of Δ Γs and the weak phase Φs in ATLAS text January 2014
Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data text January 2015
New lattice action for heavy quarks text January 2008
Possible Indications of New Physics in Bd-mixing and in sin(2 beta) Determinations text January 2008
Properties and uses of the Wilson flow in lattice QCD text January 2010
Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays text January 2012
Towards the Identification of New Physics through Quark Flavour Violating Processes text January 2013
Study of CP-violating charge asymmetries of single muons and like-sign dimuons in p pbar collisions text January 2013
Flavor and Collider Signatures of Asymmetric Dark Matter text January 2013
Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1 text January 2015
Phenomenology of semileptonic B-meson decays with form factors from lattice QCD text January 2015
Flavor constraints on the Two Higgs Doublet Models of $Z_2$ symmetric and aligned types text January 2015
Locality of the fourth root of the Staggered-fermion determinant: renormalization-group approach text January 2004
Staggered Chiral Perturbation Theory and the Fourth-Root Trick text January 2006
A New Way to Set the Energy Scale in Lattice Gauge Theories and its Application to the Static Force and $α_s$ in SU(2) Yang--Mills Theory text January 1993
Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks text January 1998
Partial Flavor Symmetry Restoration for Chiral Staggered Fermions text January 1999
2000 CKM-Triangle Analysis A Critical Review with Updated Experimental Inputs and Theoretical Parameters text January 2000
QCD Corrections to Flavor-Changing Neutral Currents in the Supersymmetric Standard Model text January 1997

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Some results on lepton flavour universality violation journal July 2019
FLAG Review 2019 text January 2019
Updated B s -mixing constraints on new physics models for b s + anomalies journal May 2018
| V u s | from K ℓ 3 decay and four-flavor lattice QCD journal June 2019
Heavy Physics Contributions to Neutrinoless Double Beta Decay from QCD journal October 2018
Gauging the accidental symmetries of the standard model, and implications for the flavor anomalies text January 2020
Flavor physics and flavor anomalies in minimal fundamental partial compositeness journal June 2018
FLAG Review 2019 text January 2020
CP violation in the B system journal February 2017
FLAG Review 2019 text January 2020
Neutral B-meson mixing from full lattice QCD at the physical point text January 2019
Flavor Physics and Flavor Anomalies in Minimal Fundamental Partial Compositeness text January 2017
Some results on Lepton Flavour Universality Violation text January 2018