Novel Determination Using Inclusive Strange Decay and Lattice Hadronic Vacuum Polarization Functions
Abstract
We propose and apply a new approach to determining |Vus| using dispersion relations with weight functions having poles at Euclidean (spacelike) momentum which relate strange hadronic τ decay distributions to hadronic vacuum polarization (HVP) functions obtained from lattice quantum chromodynamics. We show examples where spectral integral contributions from the region where experimental data have large errors or do not exist are strongly suppressed but accurate determinations of the relevant lattice HVP combinations remain possible. The resulting |Vus| agrees well with determinations from K physics and three-family Cabibbo-Kobayashi-Maskawa unitarity. Finally, advantages of this new approach over the conventional hadronic τ decay determination employing flavor-breaking sum rules are also discussed.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- RBC and UKQCD Collaborations
- OSTI Identifier:
- 1482416
- Alternate Identifier(s):
- OSTI ID: 1485774
- Report Number(s):
- BNL-209737-2018-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 202003
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 121 Journal Issue: 20; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HVP; lattice; QCD; Tau; OPE; hadronic; Vus; EFT; polarization; UKQCD; RBC; CKM; electroweak
Citation Formats
Boyle, Peter, Hudspith, Renwick James, Izubuchi, Taku, Jüttner, Andreas, Lehner, Christoph, Lewis, Randy, Maltman, Kim, Ohki, Hiroshi, Portelli, Antonin, Spraggs, Matthew, and RBC and UKQCD Collaborations. Novel | V u s | Determination Using Inclusive Strange τ Decay and Lattice Hadronic Vacuum Polarization Functions. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.202003.
Boyle, Peter, Hudspith, Renwick James, Izubuchi, Taku, Jüttner, Andreas, Lehner, Christoph, Lewis, Randy, Maltman, Kim, Ohki, Hiroshi, Portelli, Antonin, Spraggs, Matthew, & RBC and UKQCD Collaborations. Novel | V u s | Determination Using Inclusive Strange τ Decay and Lattice Hadronic Vacuum Polarization Functions. United States. https://doi.org/10.1103/PhysRevLett.121.202003
Boyle, Peter, Hudspith, Renwick James, Izubuchi, Taku, Jüttner, Andreas, Lehner, Christoph, Lewis, Randy, Maltman, Kim, Ohki, Hiroshi, Portelli, Antonin, Spraggs, Matthew, and RBC and UKQCD Collaborations. Fri .
"Novel | V u s | Determination Using Inclusive Strange τ Decay and Lattice Hadronic Vacuum Polarization Functions". United States. https://doi.org/10.1103/PhysRevLett.121.202003.
@article{osti_1482416,
title = {Novel | V u s | Determination Using Inclusive Strange τ Decay and Lattice Hadronic Vacuum Polarization Functions},
author = {Boyle, Peter and Hudspith, Renwick James and Izubuchi, Taku and Jüttner, Andreas and Lehner, Christoph and Lewis, Randy and Maltman, Kim and Ohki, Hiroshi and Portelli, Antonin and Spraggs, Matthew and RBC and UKQCD Collaborations},
abstractNote = {We propose and apply a new approach to determining |Vus| using dispersion relations with weight functions having poles at Euclidean (spacelike) momentum which relate strange hadronic τ decay distributions to hadronic vacuum polarization (HVP) functions obtained from lattice quantum chromodynamics. We show examples where spectral integral contributions from the region where experimental data have large errors or do not exist are strongly suppressed but accurate determinations of the relevant lattice HVP combinations remain possible. The resulting |Vus| agrees well with determinations from K physics and three-family Cabibbo-Kobayashi-Maskawa unitarity. Finally, advantages of this new approach over the conventional hadronic τ decay determination employing flavor-breaking sum rules are also discussed.},
doi = {10.1103/PhysRevLett.121.202003},
journal = {Physical Review Letters},
number = 20,
volume = 121,
place = {United States},
year = {Fri Nov 16 00:00:00 EST 2018},
month = {Fri Nov 16 00:00:00 EST 2018}
}
https://doi.org/10.1103/PhysRevLett.121.202003
Web of Science
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