Kaon bag parameter BK at the physical mass point

Budapest-Marseille-Wuppertal Collaboration

Research output: Contribution to journalConference article

Abstract

A summary of the recent determination of the kaon bag parameter BK by the Budapest-Marseille-Wuppertal collaboration is given. We use a subset of our new 2+1 flavor ensembles with tree-level Symanzik glue and 2-step HEX-smeared clover fermions, featuring pion masses between 120 MeV and 380 MeV, a total of 4 lattice spacings (at 2 of which the physical mass point is reached) and large volumes (up to 6 fm). We use the RI/MOM scheme with trace subtraction to renormalize the data non-perturbatively. We find BRI K (3.5 GeV) = 0.5308(56)(23) at the physical mass point, in the continuum and in infinite volume, with all systematics accounted for. Finally, the details of the conversion to RGI and MS conventions are discussed.

Original languageEnglish
JournalProceedings of Science
Volume139
Publication statusPublished - Jan 1 2011
Event29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States
Duration: Jul 10 2011Jul 16 2011

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bags
MOM (semiconductors)
glues
subtraction
set theory
pions
fermions
spacing
continuums

ASJC Scopus subject areas

  • General

Cite this

Budapest-Marseille-Wuppertal Collaboration (2011). Kaon bag parameter BK at the physical mass point. Proceedings of Science, 139.

Kaon bag parameter BK at the physical mass point. / Budapest-Marseille-Wuppertal Collaboration.

In: Proceedings of Science, Vol. 139, 01.01.2011.

Research output: Contribution to journalConference article

Budapest-Marseille-Wuppertal Collaboration 2011, 'Kaon bag parameter BK at the physical mass point', Proceedings of Science, vol. 139.
Budapest-Marseille-Wuppertal Collaboration. Kaon bag parameter BK at the physical mass point. Proceedings of Science. 2011 Jan 1;139.
Budapest-Marseille-Wuppertal Collaboration. / Kaon bag parameter BK at the physical mass point. In: Proceedings of Science. 2011 ; Vol. 139.
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abstract = "A summary of the recent determination of the kaon bag parameter BK by the Budapest-Marseille-Wuppertal collaboration is given. We use a subset of our new 2+1 flavor ensembles with tree-level Symanzik glue and 2-step HEX-smeared clover fermions, featuring pion masses between 120 MeV and 380 MeV, a total of 4 lattice spacings (at 2 of which the physical mass point is reached) and large volumes (up to 6 fm). We use the RI/MOM scheme with trace subtraction to renormalize the data non-perturbatively. We find BRI K (3.5 GeV) = 0.5308(56)(23) at the physical mass point, in the continuum and in infinite volume, with all systematics accounted for. Finally, the details of the conversion to RGI and MS conventions are discussed.",
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AU - Budapest-Marseille-Wuppertal Collaboration

AU - Dürr, S.

AU - Fodor, Z.

AU - Hoelbling, C.

AU - Katz, S. D.

AU - Krieg, S.

AU - Kurth, T.

AU - Lellouch, L.

AU - Lippert, T.

AU - McNeile, C.

AU - Portelli, A.

AU - Szabó, K. K.

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AB - A summary of the recent determination of the kaon bag parameter BK by the Budapest-Marseille-Wuppertal collaboration is given. We use a subset of our new 2+1 flavor ensembles with tree-level Symanzik glue and 2-step HEX-smeared clover fermions, featuring pion masses between 120 MeV and 380 MeV, a total of 4 lattice spacings (at 2 of which the physical mass point is reached) and large volumes (up to 6 fm). We use the RI/MOM scheme with trace subtraction to renormalize the data non-perturbatively. We find BRI K (3.5 GeV) = 0.5308(56)(23) at the physical mass point, in the continuum and in infinite volume, with all systematics accounted for. Finally, the details of the conversion to RGI and MS conventions are discussed.

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