πK scattering in full QCD with domain-wall valence quarks

被引：63

作者：

Beane, Silas R. ^{[1
]}

Bedaque, Paulo F.

Luu, Thomas C.

Orginos, Kostas

Pallante, Elisabetta

Parreno, Assumpta

Savage, Martin J.

机构：

[1] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA

[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[3] Lawrence Livermore Natl Lab, N Div, Livermore, CA 94551 USA

[4] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA

[5] Jefferson Lab, Newport News, VA 23606 USA

[6] Univ Groningen, Inst Theoret Phys, NL-9747 AG Groningen, Netherlands

[7] Univ Barcelona, Dept Estruct & Constituents Mat, E-08028 Barcelona, Spain

[8] Univ Washington, Dept Phys, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW D | 2006年 / 74卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.74.114503

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the pi K-+(+) scattering length in fully-dynamical lattice QCD with domain-wall valence quarks on MILC lattices with rooted staggered sea-quarks at a lattice spacing of b=0.125 fm, lattice spatial size of L=2.5 fm and at pion masses of m(pi)similar to 290, 350, 490 and 600 MeV. The lattice data, analyzed at next-to-leading order in chiral perturbation theory, allows an extraction of the full pi K scattering amplitude at threshold. Extrapolating to the physical point gives m(pi)a(3/2)=-0.0574 +/- 0.0016(-0.0058)(+0.0024) and m(pi)a(1/2)=0.1725 +/- 0.0017(-0.0156)(+0.0023) for the I=3/2 and I=1/2 scattering lengths, respectively, where the first error is statistical and the second error is an estimate of the systematic due to truncation of the chiral expansion.

引用

页数：9

共 46 条

[1] First measurement of the π+π- atom lifetime [J].

Adeva, B ;

Afanasyev, L ;

Benayoun, M ;

Benelli, A ;

Berka, Z ;

Brekhovskikh, V ;

Caragheorgheopol, G ;

Cechak, T ;

Chiba, M ;

Constantinescu, S ;

Detraz, C ;

Dreossi, D ;

Drijard, D ;

Dudarev, A ;

Evangelou, I ;

Ferro-Luzzi, M ;

Gallas, MV ;

Gerndt, J ;

Giacomich, R ;

Gianotti, P ;

Goldin, D ;

Gómez, F ;

Gorin, A ;

Gorchakov, O ;

Guaraldo, C ;

Hansroul, M ;

Hosek, R ;

Iliescu, M ;

Karpukhin, V ;

Kluson, J ;

Kobayashi, M ;

Kokkas, P ;

Komarov, V ;

Kruglov, V ;

Kruglova, L ;

Kulikov, A ;

Kuptsov, A ;

Kurochkin, I ;

Kuroda, KI ;

Lamberto, A ;

Lanaro, A ;

Lapshin, V ;

Lednicky, R ;

Leruste, P ;

Sandri, PL ;

Aguera, AL ;

Lucherini, V ;

Maki, T ;

Manthos, N ;

Manuilov, I .

PHYSICS LETTERS B, 2005, 619 (1-2) :50-60

[2] I=2 ππ scattering from fully-dynamical mixed-action lattice QCD [J].

Beane, SR ;

Bedaque, PF ;

Orginos, K ;

Savage, MJ .

PHYSICAL REVIEW D, 2006, 73 (05)

[3] Two nucleons on a lattice [J].

Beane, SR ;

Bedaque, PF ;

Parreño, A ;

Savage, MJ .

PHYSICS LETTERS B, 2004, 585 (1-2) :106-114

[4]

BEANE SR, HEPLAT0606023

[5] Staggered chiral perturbation theory and the fourth-root trick [J].

Bernard, C. .

PHYSICAL REVIEW D, 2006, 73 (11)

[6] QCD spectrum with three quark flavors [J].

Bernard, C ;

Burch, T ;

Orginos, K ;

Toussaint, D ;

DeGrand, TA ;

DeTar, C ;

Datta, S ;

Gottlieb, S ;

Heller, UM ;

Sugar, R .

PHYSICAL REVIEW D, 2001, 64 (05)

[7]

BERNARD C, HEPLAT0603027

[8] Observations on staggered fermions at nonzero lattice spacing [J].

Bernard, Claude ;

Golterman, Maarten ;

Shamir, Yigal .

PHYSICAL REVIEW D, 2006, 73 (11)

[9] PI-K SCATTERING IN CHIRAL PERTURBATION-THEORY TO ONE LOOP [J].

BERNARD, V ;

KAISER, N ;

MEISSNER, UG .

NUCLEAR PHYSICS B, 1991, 357 (01) :129-152

[10] THRESHOLD PARAMETERS OF PI-K SCATTERING IN QCD [J].

BERNARD, V ;

KAISER, N ;

MEISSNER, UG .

PHYSICAL REVIEW D, 1991, 43 (09) :R2757-R2760

← 1 2 3 4 5 →