Master formula approach to chiral symmetry breaking: ππ-scattering

James V. Steele; Hidenaga Yamagishi; Ismail Zahed

doi:10.1016/S0375-9474(96)00488-5

Master formula approach to chiral symmetry breaking: ππ-scattering

James V. Steele
, Hidenaga Yamagishi
, Ismail Zahed

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for ππ scattering in the elastic region. The results are in excellent agreement with the data for the phase shifts up to the KK̄ threshold. In the resonance region the bulk of the vector current contribution is found to be fixed by the electroproduction data in a model independent way. Our analysis shows that the ππ data near threshold in the scalar channel favor a large quark condensate in the vacuum, i.e. <q̄q> ∼ -(240 MeV)³.

Original language	English
Pages (from-to)	305-324
Number of pages	20
Journal	Nuclear Physics, Section A
Volume	615
Issue number	3
DOIs	https://doi.org/10.1016/S0375-9474(96)00488-5
State	Published - Mar 31 1997

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title = "Master formula approach to chiral symmetry breaking: ππ-scattering",

abstract = "The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for ππ scattering in the elastic region. The results are in excellent agreement with the data for the phase shifts up to the K{\=K} threshold. In the resonance region the bulk of the vector current contribution is found to be fixed by the electroproduction data in a model independent way. Our analysis shows that the ππ data near threshold in the scalar channel favor a large quark condensate in the vacuum, i.e. ∼ -(240 MeV)3.",

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T2 - ππ-scattering

AU - Steele, James V.

AU - Yamagishi, Hidenaga

AU - Zahed, Ismail

PY - 1997/3/31

Y1 - 1997/3/31

N2 - The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for ππ scattering in the elastic region. The results are in excellent agreement with the data for the phase shifts up to the KK̄ threshold. In the resonance region the bulk of the vector current contribution is found to be fixed by the electroproduction data in a model independent way. Our analysis shows that the ππ data near threshold in the scalar channel favor a large quark condensate in the vacuum, i.e. ∼ -(240 MeV)3.

AB - The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for ππ scattering in the elastic region. The results are in excellent agreement with the data for the phase shifts up to the KK̄ threshold. In the resonance region the bulk of the vector current contribution is found to be fixed by the electroproduction data in a model independent way. Our analysis shows that the ππ data near threshold in the scalar channel favor a large quark condensate in the vacuum, i.e. ∼ -(240 MeV)3.

UR - https://www.scopus.com/pages/publications/0031592516

U2 - 10.1016/S0375-9474(96)00488-5

DO - 10.1016/S0375-9474(96)00488-5

M3 - Article

AN - SCOPUS:0031592516

SN - 0375-9474

VL - 615

SP - 305

EP - 324

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 3

ER -

Master formula approach to chiral symmetry breaking: ππ-scattering

Abstract

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