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APS » Journals » Phys. Rev. Lett. » Volume 71 » Issue 15
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Phys. Rev. Lett. 71, 2387–2390 (1993)

Lattice QCD calculation of full pion scattering lengths

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Y. Kuramashi, M. Fukugita, H. Mino, M. Okawa, and A. Ukawa
National Laboratory for High Energy Physics (KEK), Ibaraki 305, Japan
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606, Japan
Faculty of Engineering, Yamanashi University, Kofu 400, Japan
Institute of Physics, University of Tsukuba, Ibaraki 305, Japan

Received 28 June 1993; published in the issue dated 11 October 1993

Full pion four-point functions at zero momentum are calculated with Kogut-Susskind quarks on a 123×20 lattice at β=5.7 and mq=0.01 in quenched lattice QCD, employing the wall source method without gauge fixing. For both I=0 and 2 channels, results for the s-wave scattering lengths are in agreement with the prediction of current algebra and PCAC (partial conservation of atral-vector current).

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.2387
DOI:
10.1103/PhysRevLett.71.2387
PACS:
12.38.Gc, 11.40.Fy
 
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