Chirally constraining the ππ interaction in nuclear matter
نویسندگان
چکیده
منابع مشابه
A ug 1 99 5 Chirally Constraining the ππ Interaction in Nuclear Matter
A general prescription for the construction of ππ interaction potentials which preserve scattering length constraints from chiral symmetry when iterated in scattering equations is derived. The prescription involves only minor modifications of typical meson-exchange models, so that coupling constants and cutoff masses in the models are not greatly affected. Calculations of s-wave ππ scattering a...
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We calculate the width for the ω → ππ decay in nuclear medium. Chiral dynamics and low-density approximation are used. At densities around twice the nuclear saturation density we estimate the partial width for the decay of the longitudinal mode to be of the order of a few tens of MeV, and for the transverse mode a few times less.
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متن کاملChiral nonperturbative approach to the isoscalar s - wave ππ interaction in a nuclear medium
Chiral nonperturbative approach to the isoscalar s-wave ππ interaction in a nuclear medium Abstract The s-wave isoscalar amplitude for ππ scattering in a nuclear medium is evaluated using a nonperturbative unitary coupled channels method and the standard chiral Lagrangians. The method has proved successful to describe the ππ properties in the scalar isoscalar channel up to 1.2 GeV giving rise t...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1996
ISSN: 0375-9474
DOI: 10.1016/0375-9474(95)00405-x