Hadronic Parity Violation from 4-quark Interactions

Sen, Aniket; Petschlies, Marcus; Schlage, Nikolas; Urbach, Carsten

doi:10.48550/arxiv.2111.09025

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2023

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“…A description of the calculation techniques used for the different quark flow diagrams is provided in Ref. [17].…”

Section: Lattice Simulationmentioning

confidence: 99%

Hadronic Parity Violation from Twisted Mass Lattice QCD

Schlage¹,

Petschlies²,

Sen³

et al. 2023

Proceedings of the 39th International Symposium on Lattice Field Theory — PoS(LATTICE2022)

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We present results for an exploratory lattice calculation of the leading parity-violating pion-nucleon coupling ℎ 1 𝜋 . Based on the PCAC relation we use a parity-conserving Lagrangian and focus on the techniques to determine the nucleon matrix elements of the effective 4-quark operators. For our study we employ an ensemble of twisted mass fermions with 260 MeV pion mass. Barring mixing with lower-dimensional operators and renormalization at this stage, we discuss our estimate for ℎ 1 𝜋 .

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“…A description of the calculation techniques used for the different quark flow diagrams is provided in Ref. [17].…”

Section: Lattice Simulationmentioning

confidence: 99%