Test of isospin symmetry via low-energy H1(π-,π0)n charge exchange

Y. Jia; T. P. Gorringe; M. D. Hasinoff; M. A. Kovash; M. Ojha; M. M. Pavan; S. Tripathi; P. A. Zołnierczuk

doi:10.1103/PhysRevLett.101.102301

Test of isospin symmetry via low-energy H1(π-,π0)n charge exchange

Y. Jia, T. P. Gorringe, M. D. Hasinoff, M. A. Kovash, M. Ojha, M. M. Pavan, S. Tripathi, P. A. Zołnierczuk

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7 Scopus citations

Abstract

We report measurements of the π-p→π0n differential cross sections at six momenta (104-143MeV/c) and four angles (0°-40°) by detection of γ-ray pairs from π0→γγ decays using a photon-pair spectrometer at TRIUMF. This kinematic region exhibits a vanishing zero-degree cross section from destructive interference between s and p waves, thus yielding special sensitivity to pion-nucleon dynamics. Our data and previous data do not agree, with important implications for earlier claims of large isospin-violating effects.

Original language	English
Article number	102301
Journal	Physical Review Letters
Volume	101
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.101.102301
State	Published - Sep 5 2008
Externally published	Yes

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title = "Test of isospin symmetry via low-energy H1(π-,π0)n charge exchange",

abstract = "We report measurements of the π-p→π0n differential cross sections at six momenta (104-143MeV/c) and four angles (0°-40°) by detection of γ-ray pairs from π0→γγ decays using a photon-pair spectrometer at TRIUMF. This kinematic region exhibits a vanishing zero-degree cross section from destructive interference between s and p waves, thus yielding special sensitivity to pion-nucleon dynamics. Our data and previous data do not agree, with important implications for earlier claims of large isospin-violating effects.",

author = "Y. Jia and Gorringe, {T. P.} and Hasinoff, {M. D.} and Kovash, {M. A.} and M. Ojha and Pavan, {M. M.} and S. Tripathi and Zo{\l}nierczuk, {P. A.}",

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doi = "10.1103/PhysRevLett.101.102301",

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T1 - Test of isospin symmetry via low-energy H1(π-,π0)n charge exchange

AU - Jia, Y.

AU - Gorringe, T. P.

AU - Hasinoff, M. D.

AU - Kovash, M. A.

AU - Ojha, M.

AU - Pavan, M. M.

AU - Tripathi, S.

AU - Zołnierczuk, P. A.

PY - 2008/9/5

Y1 - 2008/9/5

N2 - We report measurements of the π-p→π0n differential cross sections at six momenta (104-143MeV/c) and four angles (0°-40°) by detection of γ-ray pairs from π0→γγ decays using a photon-pair spectrometer at TRIUMF. This kinematic region exhibits a vanishing zero-degree cross section from destructive interference between s and p waves, thus yielding special sensitivity to pion-nucleon dynamics. Our data and previous data do not agree, with important implications for earlier claims of large isospin-violating effects.

AB - We report measurements of the π-p→π0n differential cross sections at six momenta (104-143MeV/c) and four angles (0°-40°) by detection of γ-ray pairs from π0→γγ decays using a photon-pair spectrometer at TRIUMF. This kinematic region exhibits a vanishing zero-degree cross section from destructive interference between s and p waves, thus yielding special sensitivity to pion-nucleon dynamics. Our data and previous data do not agree, with important implications for earlier claims of large isospin-violating effects.

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U2 - 10.1103/PhysRevLett.101.102301

DO - 10.1103/PhysRevLett.101.102301

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VL - 101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 102301

ER -

Test of isospin symmetry via low-energy H1(π-,π0)n charge exchange

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