T. Blum
University of Connecticut
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Featured researches published by T. Blum.
Physical Review D | 2008
Chris Allton; D.J. Antonio; Yasumichi Aoki; T. Blum; Peter A. Boyle; Norman H. Christ; Michael Clark; Saul D. Cohen; C. Dawson; M. A. Donnellan; Jonathan M. Flynn; A. Hart; Taku Izubuchi; C. K. Jung; Andreas Juttner; Anthony D. Kennedy; R.D. Kenway; M. Li; S. Li; M. F. Lin; Robert D. Mawhinney; C.M. Maynard; Shigemi Ohta; Brian Pendleton; C.T. Sachrajda; Shoichi Sasaki; E. E. Scholz; Amarjit Soni; R.J. Tweedie; J. Wennekers
We have simulated QCD using 2+1 flavors of domain wall quarks on a (2.74fm)3 volume with an inverse lattice scale of a?1=1.729(28) GeV. The up and down (light) quarks are degenerate in our calculations and we have used four values for the ratio of light quark masses to the strange (heavy) quark mass in our simulations: 0.217, 0.350, 0.617 and 0.884. We have measured pseudoscalar meson masses and decay constants, the kaon bag parameter BK and vector meson couplings. We have used SU(2) chiral perturbation theory, which assumes only the up and down quark masses are small, and SU(3) chiral perturbation theory to extrapolate to the physical values for the light quark masses. While next-to-leading order formulae from both approaches fit our data for light quarks, we find the higher order corrections for SU(3) very large, making such fits unreliable. We also find that SU(3) does not fit our data when the quark masses are near the physical strange quark mass. Thus, we rely on SU(2) chiral perturbation theory for accurate results. We use the masses of the ? baryon, and the ? and K mesons to set the lattice scale and determine the quark masses. We then find f?=124.1(3.6)stat(6.9)systMeV, fK=149.6(3.6)stat(6.3)systMeV and fK/f?=1.205(0.018)stat(0.062)syst. Using non-perturbative renormalization to relate lattice regularized quark masses to RI-MOM masses, and perturbation theory to relate these to MS¯ we find mMS¯ud(2GeV)=3.72(0.16)stat(0.33)ren(0.18)systMeV and mMS¯s(2GeV)=107.3(4.4)stat(9.7)ren(4.9)systMeV.
European Physical Journal C | 2017
Sinya Aoki; Yasumichi Aoki; Damir Becirevic; C. Bernard; T. Blum; Gilberto Colangelo; M. Della Morte; P. Dimopoulos; S. Durr; Hidenori Fukaya; Maarten Golterman; Steven Gottlieb; S. Hashimoto; U. M. Heller; R. Horsley; Andreas Jüttner; Takeshi Kaneko; L. Lellouch; H. Leutwyler; C. J D Lin; Vittorio Lubicz; Enrico Lunghi; Robert D. Mawhinney; Tetsuya Onogi; Carol Peña; Christopher T. Sachrajda; Stephen R. Sharpe; S. Simula; Rainer Sommer; A. Vladikas
We review lattice results related to pion, kaon, D- and B-meson physics with the aim of making them easily accessible to the particle-physics community. More specifically, we report on the determination of the light-quark masses, the form factor
Physical Review Letters | 2003
T. Blum
Physical Review D | 2002
Shoichi Sasaki; T. Blum; Shigemi Ohta
f_+(0)
Physical Review D | 2004
T. Blum; C. Malureanu; Amarjit Soni; Yuri Zhestkov; Norman H. Christ; X. Liao; C. Sui; A. Kaehler; Robert D. Mawhinney; S. Ohta; G. Liu; G. Siegert; P. Vranas; George T. Fleming; C. Cristian; C. Dawson; L. Wu; Matthew Wingate; P. Chen
Physical Review D | 2001
T. Blum; Amarjit Soni; Y. Zhestkov; Robert D. Mawhinney; Shigemi Ohta; Norman H. Christ; G. Siegert; Pavlos M. Vranas; George T. Fleming; C. Cristian; C. Dawson; L. Wu; Matthew Wingate; P. Chen
f+(0), arising in the semileptonic
Physical Review D | 2007
Chris Allton; D. J. Antonio; T. Blum; K.C. Bowler; Peter A. Boyle; Norman H. Christ; Saul D. Cohen; Michael Clark; C. Dawson; A. Hart; K. Hashimoto; Taku Izubuchi; Andreas Jüttner; C. K. Jung; A. D. Kennedy; R.D. Kenway; M. Li; S. Li; Meifeng Lin; Robert D. Mawhinney; C.M. Maynard; J. Noaki; Shigemi Ohta; Brian Pendleton; S. Sasaki; E. E. Scholz; Amarjit Soni; R.J. Tweedie; A. Yamaguchi; T. Yamazaki
Physical Review Letters | 2008
Toshimitou Yamazaki; Yasumichi Aoki; T. Blum; Huey-Wen Lin; Meifeng Lin; Shigemi Ohta; Shoichi Sasaki; R.J. Tweedie; James Zanotti
K \rightarrow \pi
Physical Review D | 2005
Y. Aoki; T. Blum; Norman H. Christ; C. Dawson; Koichi Hashimoto; Taku Izubuchi; Jack Laiho; L. Levkova; Meifeng Lin; Robert D. Mawhinney; J. Noaki; Shigemi Ohta; Kostas Orginos; Amarjit Soni
Physical Review Letters | 2008
D.J. Antonio; Peter A. Boyle; T. Blum; Norman H. Christ; Saul D. Cohen; C. Dawson; Taku Izubuchi; R.D. Kenway; C. K. Jung; S. Li; Meifeng Lin; Robert D. Mawhinney; J. Noaki; Shigemi Ohta; Brian Pendleton; E. E. Scholz; Amarjit Soni; R.J. Tweedie; A. Yamaguchi
K→π transition at zero momentum transfer, as well as the decay constant ratio
