Time-reversal invariance violation in neutron-nucleus scattering

被引：11

作者：

Fadeev, Pavel ^{[1
]}

Flambaum, Victor V. ^{[1
,2
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Helmholtz Inst Mainz, D-55099 Mainz, Germany

[2] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia

来源：

PHYSICAL REVIEW C | 2019年 / 100卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

FINITE FERMI SYSTEMS; ELECTRIC-DIPOLE MOMENTS; PARITY NONCONSERVATION; COMPOUND STATES; STATISTICAL-THEORY; MATRIX-ELEMENTS; T-ODD; DYNAMICAL ENHANCEMENT; QUANTUM CHAOS; CP-VIOLATION;

D O I：

10.1103/PhysRevC.100.015504

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Parity (P) and time-reversal (T) violating effects are enhanced a million times in neutron reactions near p-wave nuclear compound resonances. Planning and interpretation of corresponding experiments require values of the matrix elements of the T,P-violating nuclear forces between nuclear compound states. We calculate the root-mean-square values and the ratio of the matrix elements of the T,P-violating and P-violating interactions using statistical theory based on the properties of chaotic compound states. We present the results in terms of the fundamental parameters in five different forms: in terms of the constants of the contact nuclear interaction, meson exchange constants, QCD theta-term, quark chromo-electric dipole moments (d) over tilde (u) and (d) over tilde (d), and axion interaction constants. Using current limits on these parameters, we obtain upper bounds on the ratio of the matrix elements and on the ratio of T,P-violating and P-violating parts of the neutron reaction cross sections. Our results confirm that the expected sensitivity in neutron-reactions experiments may be sufficient to improve the limits on the T,P-violating interactions.

引用

页数：7

共 84 条

[1] PARITY NONCONSERVATION IN NEUTRON RESONANCES [J].

ALFIMENKOV, VP ;

BORZAKOV, SB ;

VO, VT ;

MAREEV, YD ;

PIKELNER, LB ;

KHRYKIN, AS ;

SHARAPOV, EI .

NUCLEAR PHYSICS A, 1983, 398 (01) :93-106

[2]

ALFIMENKOV VP, 1984, JETP LETT+, V39, P416

[3]

Auerbach N., 1996, PARITY TIME REVERSAL

[4]

Beda A. G., 2007, PHYS PART NUCLEI, V38, P1063, DOI DOI 10.1134/S1063779607060044

[5] Level-resolved quantum statistical theory of electron capture into many-electron compound resonances in highly charged ions [J].

Berengut, J. C. ;

Harabati, C. ;

Dzuba, V. A. ;

Flambaum, V. V. ;

Gribakin, G. F. .

PHYSICAL REVIEW A, 2015, 92 (06)

[6] Unusual statistics of interference effects in neutron scattering from compound nuclei [J].

Berengut, JC ;

Flambaum, VV ;

Gribakin, GF .

PHYSICAL REVIEW C, 2000, 62 (02) :8

[7] First Observation of P-odd γ Asymmetry in Polarized Neutron Capture on Hydrogen [J].

Blyth, D. ;

Fry, J. ;

Fomin, N. ;

Alarcon, R. ;

Alonzi, L. ;

Askanazi, E. ;

Baessler, S. ;

Balascuta, S. ;

Barron-Palos, L. ;

Barzilov, A. ;

Bowman, J. D. ;

Birge, N. ;

Calarco, J. R. ;

Chupp, T. E. ;

Cianciolo, V. ;

Coppola, C. E. ;

Crawford, C. B. ;

Craycraft, K. ;

Evans, D. ;

Fieseler, C. ;

Frlez, E. ;

Garishvili, I. ;

Gericke, M. T. W. ;

Gillis, R. C. ;

Grammer, K. B. ;

Greene, G. L. ;

Hall, J. ;

Hamblen, J. ;

Hayes, C. ;

Iverson, E. B. ;

Kabir, M. L. ;

Kucuker, S. ;

Lauss, B. ;

Mahurin, R. ;

McCrea, M. ;

Maldonado-Velazquez, M. ;

Masuda, Y. ;

Mei, J. ;

Milburn, R. ;

Mueller, P. E. ;

Musgrave, M. ;

Nann, H. ;

Novikov, I. ;

Parsons, D. ;

Penttila, S. I. ;

Pocanic, D. ;

Ramirez-Morales, A. ;

Root, M. ;

Salas-Bacci, A. ;

Santra, S. .

PHYSICAL REVIEW LETTERS, 2018, 121 (24)

[8]

Bohr A., 1969, Nuclear Structure, VII

[9]

Bohr A., 1969, Nuclear structure

[10] Search for time reversal invariance violation in neutron transmission [J].

Bowman, J. David ;

Gudkov, Vladimir .

PHYSICAL REVIEW C, 2014, 90 (06)

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