B0- B 0 mixing › Research Explorer

Standard

B0- B 0 mixing : Matching to HQET at NNLO. / Grozin, Andrey G.; Mannel, Thomas; Pivovarov, Alexei A.

In: Physical Review D, Vol. 98, No. 5, 054020, 24.09.2018.

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

Harvard

Grozin, AG, Mannel, T & Pivovarov, AA 2018, 'B0- B 0 mixing: Matching to HQET at NNLO', Physical Review D, vol. 98, no. 5, 054020. https://doi.org/10.1103/PhysRevD.98.054020

APA

Grozin, A. G., Mannel, T., & Pivovarov, A. A. (2018). B0- B 0 mixing: Matching to HQET at NNLO. Physical Review D, 98(5), [054020]. https://doi.org/10.1103/PhysRevD.98.054020

Vancouver

Grozin AG, Mannel T, Pivovarov AA. B0- B 0 mixing: Matching to HQET at NNLO. Physical Review D. 2018 Sept 24;98(5):054020. doi: 10.1103/PhysRevD.98.054020

Author

Grozin, Andrey G. ; Mannel, Thomas ; Pivovarov, Alexei A. / B0- B 0 mixing : Matching to HQET at NNLO. In: Physical Review D. 2018 ; Vol. 98, No. 5.

BibTeX

@article{1c2f29fbf15248dab930772eb30658e7,

title = "B0- B 0 mixing: Matching to HQET at NNLO",

abstract = "We compute perturbative matching coefficients to the heavy quark effective theory (HQET) representation for the QCD effective local ΔB=2 Hamiltonian that determines the mass difference in the B0-B0 system of states. We report on the results at next-to-next-to-leading order in the strong coupling constant for matching coefficients of two physical operators in HQET. Our results provide firm confirmation that the recent next-to-leading order sum rules analysis of the bag parameter Bq is stable with regard of inclusion of higher order radiative corrections. As a byproduct of our calculation we give a fully analytical solution for the one-loop QCD-to-HQET matching problem: we present the explicit formulas for the renormalization of four-quark operators of the full bases in both QCD and HQET and the expressions for matching coefficients in a closed form.",

keywords = "EFFECTIVE FIELD-THEORY, HEAVY-LIGHT CURRENTS, ANOMALOUS DIMENSIONS, WEAK DECAYS, 4-FERMION OPERATORS, QCD CORRECTIONS, MATRIX-ELEMENT, QUARK MASS, RENORMALIZATION, PARAMETER",

author = "Grozin, {Andrey G.} and Thomas Mannel and Pivovarov, {Alexei A.}",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",

year = "2018",

month = sep,

day = "24",

doi = "10.1103/PhysRevD.98.054020",

language = "English",

volume = "98",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "5",

}

RIS

TY - JOUR

T1 - B0- B 0 mixing

T2 - Matching to HQET at NNLO

AU - Grozin, Andrey G.

AU - Mannel, Thomas

AU - Pivovarov, Alexei A.

PY - 2018/9/24

Y1 - 2018/9/24

N2 - We compute perturbative matching coefficients to the heavy quark effective theory (HQET) representation for the QCD effective local ΔB=2 Hamiltonian that determines the mass difference in the B0-B0 system of states. We report on the results at next-to-next-to-leading order in the strong coupling constant for matching coefficients of two physical operators in HQET. Our results provide firm confirmation that the recent next-to-leading order sum rules analysis of the bag parameter Bq is stable with regard of inclusion of higher order radiative corrections. As a byproduct of our calculation we give a fully analytical solution for the one-loop QCD-to-HQET matching problem: we present the explicit formulas for the renormalization of four-quark operators of the full bases in both QCD and HQET and the expressions for matching coefficients in a closed form.

AB - We compute perturbative matching coefficients to the heavy quark effective theory (HQET) representation for the QCD effective local ΔB=2 Hamiltonian that determines the mass difference in the B0-B0 system of states. We report on the results at next-to-next-to-leading order in the strong coupling constant for matching coefficients of two physical operators in HQET. Our results provide firm confirmation that the recent next-to-leading order sum rules analysis of the bag parameter Bq is stable with regard of inclusion of higher order radiative corrections. As a byproduct of our calculation we give a fully analytical solution for the one-loop QCD-to-HQET matching problem: we present the explicit formulas for the renormalization of four-quark operators of the full bases in both QCD and HQET and the expressions for matching coefficients in a closed form.

KW - EFFECTIVE FIELD-THEORY

KW - HEAVY-LIGHT CURRENTS

KW - ANOMALOUS DIMENSIONS

KW - WEAK DECAYS

KW - 4-FERMION OPERATORS

KW - QCD CORRECTIONS

KW - MATRIX-ELEMENT

KW - QUARK MASS

KW - RENORMALIZATION

KW - PARAMETER

UR - http://www.scopus.com/inward/record.url?scp=85054470695&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.98.054020

DO - 10.1103/PhysRevD.98.054020

M3 - Article

AN - SCOPUS:85054470695

VL - 98

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 5

M1 - 054020

ER -

ID: 17039590