Hyperon vector coupling f1(0) from 2+1 flavor lattice QCD

Shoichi Sasaki

doi:10.1063/1.3647427

Hyperon vector coupling f₁(0) from 2+1 flavor lattice QCD

Shoichi Sasaki

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

We present results for the hyperon vector form factor f₁ for Ξ⁰→Σ⁺lν̄ and Σ ^-→nlν̄ semileptonic decays from dynamical lattice QCD with domain-wall quarks. Simulations are performed on the 2+1 flavor gauge configurations generated by the RBC and UKQCD Collaborations with a lattice cutoff of a^-1=1.7GeV. Our preliminary results, which are calculated at the lightest sea quark mass (pion mass down to approximately 330 MeV), show that a sign of the second-order correction of SU(3) breaking on hyperon vector coupling f₁(0) is likely negative.

Original language	English
Title of host publication	International Conference on the Structure of Baryons, BARYONS'10
Pages	443-446
Number of pages	4
DOIs	https://doi.org/10.1063/1.3647427
Publication status	Published - 2011
Externally published	Yes
Event	International Conference on the Structure of Baryons, BARYONS'10 - Osaka, Japan Duration: 2010 Dec 7 → 2010 Dec 11

Publication series

Name	AIP Conference Proceedings
Volume	1388
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	International Conference on the Structure of Baryons, BARYONS'10
Country/Territory	Japan
City	Osaka
Period	10/12/7 → 10/12/11

Keywords

CKM unitarily
SU(3) breaking
lattice QCD

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3647427

Cite this

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title = "Hyperon vector coupling f1(0) from 2+1 flavor lattice QCD",

abstract = "We present results for the hyperon vector form factor f1 for Ξ0→Σ+l{\=ν} and Σ -→nl{\=ν} semileptonic decays from dynamical lattice QCD with domain-wall quarks. Simulations are performed on the 2+1 flavor gauge configurations generated by the RBC and UKQCD Collaborations with a lattice cutoff of a-1=1.7GeV. Our preliminary results, which are calculated at the lightest sea quark mass (pion mass down to approximately 330 MeV), show that a sign of the second-order correction of SU(3) breaking on hyperon vector coupling f1(0) is likely negative.",

keywords = "CKM unitarily, SU(3) breaking, lattice QCD",

author = "Shoichi Sasaki",

year = "2011",

doi = "10.1063/1.3647427",

language = "English",

isbn = "9780735409521",

series = "AIP Conference Proceedings",

pages = "443--446",

booktitle = "International Conference on the Structure of Baryons, BARYONS'10",

note = "International Conference on the Structure of Baryons, BARYONS'10 ; Conference date: 07-12-2010 Through 11-12-2010",

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T1 - Hyperon vector coupling f1(0) from 2+1 flavor lattice QCD

AU - Sasaki, Shoichi

PY - 2011

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N2 - We present results for the hyperon vector form factor f1 for Ξ0→Σ+lν̄ and Σ -→nlν̄ semileptonic decays from dynamical lattice QCD with domain-wall quarks. Simulations are performed on the 2+1 flavor gauge configurations generated by the RBC and UKQCD Collaborations with a lattice cutoff of a-1=1.7GeV. Our preliminary results, which are calculated at the lightest sea quark mass (pion mass down to approximately 330 MeV), show that a sign of the second-order correction of SU(3) breaking on hyperon vector coupling f1(0) is likely negative.

AB - We present results for the hyperon vector form factor f1 for Ξ0→Σ+lν̄ and Σ -→nlν̄ semileptonic decays from dynamical lattice QCD with domain-wall quarks. Simulations are performed on the 2+1 flavor gauge configurations generated by the RBC and UKQCD Collaborations with a lattice cutoff of a-1=1.7GeV. Our preliminary results, which are calculated at the lightest sea quark mass (pion mass down to approximately 330 MeV), show that a sign of the second-order correction of SU(3) breaking on hyperon vector coupling f1(0) is likely negative.

KW - CKM unitarily

KW - SU(3) breaking

KW - lattice QCD

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SP - 443

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BT - International Conference on the Structure of Baryons, BARYONS'10

T2 - International Conference on the Structure of Baryons, BARYONS'10

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