TY - JOUR
T1 - Kaon bag parameter BK at the physical mass point
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.
N1 - Publisher Copyright:
© Copyright owned by the author(s).
PY - 2011
Y1 - 2011
N2 - 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.
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.
UR - http://www.scopus.com/inward/record.url?scp=85053358542&partnerID=8YFLogxK
M3 - Conference proceedings published in a journal
AN - SCOPUS:85053358542
SN - 1824-8039
VL - 139
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 29th International Symposium on Lattice Field Theory, Lattice 2011
Y2 - 10 July 2011 through 16 July 2011
ER -