Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data

Research output: Contribution to journalArticle

Standard

Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data. / González-Alonso, Martín; Pich, Antonio; Rodríguez-Sánchez, Antonio.

In: Physical Review D, Vol. 94, No. 1, 014017, 15.07.2016.

Research output: Contribution to journalArticle

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data

AU - González-Alonso, Martín

AU - Pich, Antonio

AU - Rodríguez-Sánchez, Antonio

PY - 2016/7/15

Y1 - 2016/7/15

N2 - We analyze the lowest spectral moments of the left-right two-point correlation function, using all known short-distance constraints and the recently updated ALEPH V-A spectral function from τ decays. This information is used to determine the low-energy couplings L10 and C87 of chiral perturbation theory and the lowest-dimensional contributions to the operator product expansion of the left-right correlator. A detailed statistical analysis is implemented to assess the theoretical uncertainties, including violations of quark-hadron duality.

AB - We analyze the lowest spectral moments of the left-right two-point correlation function, using all known short-distance constraints and the recently updated ALEPH V-A spectral function from τ decays. This information is used to determine the low-energy couplings L10 and C87 of chiral perturbation theory and the lowest-dimensional contributions to the operator product expansion of the left-right correlator. A detailed statistical analysis is implemented to assess the theoretical uncertainties, including violations of quark-hadron duality.

UR - http://www.scopus.com/inward/record.url?scp=84978381239&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.94.014017

DO - 10.1103/PhysRevD.94.014017

M3 - Article

VL - 94

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-2368

IS - 1

M1 - 014017

ER -