High sensitivity of a future search for P-odd/T-odd interactions on the 0.75 eV \(p\)-wave resonance in \(\vec{n}+^{139}\vec{\rm La}\) forward transmission determined using pulsed neutron beam
Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In...
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creator | Nakabe, R Auton, C J Endo, S Fujioka, H Gudkov, V Hirota, K Ide, I Ino, T Ishikado, M Kambara, W Kawamura, S Kimura, A Kitaguchi, M Kobayashi, R Okamura, T Oku, T Okudaira, T Okuizumi, M Otero Munoz, J G Parker, J D Sakai, K Shima, T Shimizu, H M Shinohara, T Snow, W M Takada, S Takahashi, R Takahashi, S Tsuchikawa, Y Yoshioka, T |
description | Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In these compound processes, the TRIV cross-section is given as the product of the PV cross-section, a spin-factor \(\kappa\), and a ratio of TRIV and PV matrix elements. We determined \(\kappa\) to be \(0.59\pm0.05\) for \(^{139}\)La+\(n\) using both \((n, \gamma)\) spectroscopy and (\(\vec{n}+^{139}\vec{\rm La}\)) transmission. This result quantifies for the first time the high sensitivity of the \(^{139}\)La 0.75~eV \(p\)-wave resonance in a future search for P-odd/T-odd interactions in (\(\vec{n}+^{139}\vec{\rm La}\)) forward transmission. |
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In these compound processes, the TRIV cross-section is given as the product of the PV cross-section, a spin-factor \(\kappa\), and a ratio of TRIV and PV matrix elements. We determined \(\kappa\) to be \(0.59\pm0.05\) for \(^{139}\)La+\(n\) using both \((n, \gamma)\) spectroscopy and (\(\vec{n}+^{139}\vec{\rm La}\)) transmission. This result quantifies for the first time the high sensitivity of the \(^{139}\)La 0.75~eV \(p\)-wave resonance in a future search for P-odd/T-odd interactions in (\(\vec{n}+^{139}\vec{\rm La}\)) forward transmission.</description><identifier>EISSN: 2331-8422</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Cross-sections ; Neutron beams ; Nucleon-nucleon interactions ; Resonance ; Searching ; Sensitivity</subject><ispartof>arXiv.org, 2023-12</ispartof><rights>2023. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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In these compound processes, the TRIV cross-section is given as the product of the PV cross-section, a spin-factor \(\kappa\), and a ratio of TRIV and PV matrix elements. We determined \(\kappa\) to be \(0.59\pm0.05\) for \(^{139}\)La+\(n\) using both \((n, \gamma)\) spectroscopy and (\(\vec{n}+^{139}\vec{\rm La}\)) transmission. This result quantifies for the first time the high sensitivity of the \(^{139}\)La 0.75~eV \(p\)-wave resonance in a future search for P-odd/T-odd interactions in (\(\vec{n}+^{139}\vec{\rm La}\)) forward transmission.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><oa>free_for_read</oa></addata></record> |
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subjects | Cross-sections Neutron beams Nucleon-nucleon interactions Resonance Searching Sensitivity |
title | High sensitivity of a future search for P-odd/T-odd interactions on the 0.75 eV \(p\)-wave resonance in \(\vec{n}+^{139}\vec{\rm La}\) forward transmission determined using pulsed neutron beam |
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