Bounds on rare decays of η and η′ mesons from the neutron EDM
| Parent link: | Physical Review D: covering particles, fields, gravitation, and cosmology Vol. 99, iss. 3.— 2019.— [031703(R), 6 p.] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , , |
| Summary: | Title screen We provide model-independent bounds on the rates of rare decays η(η′)→ππ based on experimental limits on the neutron electric dipole moment (nEDM). Starting from phenomenological η(η′)ππ couplings, the nEDM arises at the two-loop level. The leading-order relativistic chiral perturbation theory calculation with the minimal photon coupling to charged pions and a proton inside the loops leads to a finite, counterterm-free result. This is an improvement upon previous estimates which used approximations in evaluating the two-loop contribution and were plagued by divergences. While constraints on the η(η′)ππ couplings in our phenomenological approach are somewhat milder than in the picture with the QCD θ term, our calculation means that whatever the origin of these couplings, the decays η(η′)→2π will remain unobservable in the near future. Режим доступа: по договору с организацией-держателем ресурса |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://doi.org/10.1103/PhysRevD.99.031703 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660821 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 660821 | ||
| 005 | 20251106105845.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\30872 | ||
| 035 | |a RU\TPU\network\30718 | ||
| 090 | |a 660821 | ||
| 100 | |a 20191028d2019 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a US | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Bounds on rare decays of η and η′ mesons from the neutron EDM |f A. S. Zhevlakov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 27 tit.] | ||
| 330 | |a We provide model-independent bounds on the rates of rare decays η(η′)→ππ based on experimental limits on the neutron electric dipole moment (nEDM). Starting from phenomenological η(η′)ππ couplings, the nEDM arises at the two-loop level. The leading-order relativistic chiral perturbation theory calculation with the minimal photon coupling to charged pions and a proton inside the loops leads to a finite, counterterm-free result. This is an improvement upon previous estimates which used approximations in evaluating the two-loop contribution and were plagued by divergences. While constraints on the η(η′)ππ couplings in our phenomenological approach are somewhat milder than in the picture with the QCD θ term, our calculation means that whatever the origin of these couplings, the decays η(η′)→2π will remain unobservable in the near future. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review D |o covering particles, fields, gravitation, and cosmology | ||
| 463 | |t Vol. 99, iss. 3 |v [031703(R), 6 p.] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a распады | |
| 610 | 1 | |a мезоны | |
| 701 | 0 | |a Zhevlakov |b A. S. |g Aleksey Seregeevich | |
| 701 | 0 | |a Gorchtein |b M. |g Mikhail | |
| 701 | 1 | |a Blin |b A. H. |g Astrid Hiller | |
| 701 | 1 | |a Gutsche |b T. |g Thomas | |
| 701 | 1 | |a Lyubovitskiy (Lyubovitskij) |b V. E. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) |f 1963- |g Valery Efimovich |3 (RuTPU)RU\TPU\pers\33385 |9 17080 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 801 | 2 | |a RU |b 63413507 |c 20191028 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1103/PhysRevD.99.031703 | |
| 942 | |c CF | ||