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Accurate Test of Chiral Dynamics in the β†’ 𝛾 ⁒𝑝 β†’πœ‹0⁒𝑝 Reaction

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2013-08-07
Autores
Hornidge, D
Aguar BartolomΓ©, P.
J. R. M. Annand,
et al
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info:eu-repo/semantics/openAccess
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American Physical Society
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A precision measurement of the differential cross sections π‘‘β’πœŽ/𝑑⁒𝛺 and the linearly polarized photon asymmetry 𝛴 ≑(π‘‘β’πœŽβŠ₯ βˆ’π‘‘β’πœŽβˆ₯)/(π‘‘β’πœŽβŠ₯ +π‘‘β’πœŽβˆ₯) for the →𝛾⁒𝑝 β†’πœ‹0⁒𝑝 reaction in the near-threshold region has been performed with a tagged photon beam and almost 4β’πœ‹ detector at the Mainz Microtron. The Glasgow-Mainz photon tagging facility along with the Crystal Ball/TAPS multiphoton detector system and a cryogenic liquid hydrogen target were used. These data allowed for a precise determination of the energy dependence of the real parts of the 𝑆- and all three 𝑃-wave amplitudes for the first time and provide the most stringent test to date of the predictions of chiral perturbation theory and its energy region of agreement with experiment.
DescripciΓ³n
This is an Accepted Manuscript of an article published by American Physical Society in " Physical Review Letters 111(6)", available at: https://doi.org/10.1103/PhysRevLett.111.062004
Este es el manuscrito aceptado del artΓ­culo publicado por American Physical Society en "Physical Review Letters 111(6)", disponible en lΓ­nea: https://doi.org/10.1103/PhysRevLett.111.062004
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CitaciΓ³n
Hornidge, D. et al. (2013) Accurate test of chiral dynamics in the ~Ξ³p β†’ Ο€ 0p reaction. Physical Review Letters, 111(6), Art. 062004. (doi: 10.1103/PhysRevLett.111.062004)
Centro
Facultades y escuelas::Facultad de Ciencias
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FΓ­sica Interdisciplinar
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