The parity-violating asymmetry in the 3He(→n, p) 3H reaction

M. Viviani; A. Baroni; L. Girlanda; R. Schiavilla

doi:10.1393/ncc/i2012-11299-0

The parity-violating asymmetry in the ³He(→n, p) ³H reaction

M. Viviani, A. Baroni, L. Girlanda, R. Schiavilla

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

Abstract

The longitudinal asymmetry A^n3He_z in the ³He(→n, p)³H reaction is an observable directly related to parity-violating (PV) components in the nucleonnucleon (NN) interaction. Here we study A^n3He_z using a PV NN potential derived from an effective field theory framework at next-to-next-to-leading order, including one- and two-pion exchanges, contact interactions and relativistic corrections. This potential depends on six low-energy constants. Some of these parameters are constrained to reproduce the existing accurate measurements of the →p-p longitudinal asymmetry. Using these constraints we compute A^n3He_z and study the sensitivity of such an observable to the unconstrained parameters.

Original language	English
Pages (from-to)	47-51
Number of pages	5
Journal	Nuovo Cimento della Societa Italiana di Fisica C
Volume	35
Issue number	4
DOIs	https://doi.org/10.1393/ncc/i2012-11299-0
State	Published - 2012
Externally published	Yes

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abstract = "The longitudinal asymmetry An3Hez in the 3He(→n, p)3H reaction is an observable directly related to parity-violating (PV) components in the nucleonnucleon (NN) interaction. Here we study An3Hez using a PV NN potential derived from an effective field theory framework at next-to-next-to-leading order, including one- and two-pion exchanges, contact interactions and relativistic corrections. This potential depends on six low-energy constants. Some of these parameters are constrained to reproduce the existing accurate measurements of the →p-p longitudinal asymmetry. Using these constraints we compute An3Hez and study the sensitivity of such an observable to the unconstrained parameters.",

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AU - Baroni, A.

AU - Girlanda, L.

AU - Schiavilla, R.

PY - 2012

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N2 - The longitudinal asymmetry An3Hez in the 3He(→n, p)3H reaction is an observable directly related to parity-violating (PV) components in the nucleonnucleon (NN) interaction. Here we study An3Hez using a PV NN potential derived from an effective field theory framework at next-to-next-to-leading order, including one- and two-pion exchanges, contact interactions and relativistic corrections. This potential depends on six low-energy constants. Some of these parameters are constrained to reproduce the existing accurate measurements of the →p-p longitudinal asymmetry. Using these constraints we compute An3Hez and study the sensitivity of such an observable to the unconstrained parameters.

AB - The longitudinal asymmetry An3Hez in the 3He(→n, p)3H reaction is an observable directly related to parity-violating (PV) components in the nucleonnucleon (NN) interaction. Here we study An3Hez using a PV NN potential derived from an effective field theory framework at next-to-next-to-leading order, including one- and two-pion exchanges, contact interactions and relativistic corrections. This potential depends on six low-energy constants. Some of these parameters are constrained to reproduce the existing accurate measurements of the →p-p longitudinal asymmetry. Using these constraints we compute An3Hez and study the sensitivity of such an observable to the unconstrained parameters.

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JF - Nuovo Cimento della Societa Italiana di Fisica C

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ER -

The parity-violating asymmetry in the ³He(→n, p) ³H reaction

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