Published January 2006 | Version v1
Journal article Metadata-only

Observation of the neutron radiative decay

Creators

  • 1. RRC Kurchatov Inst., Moscow (Russian Federation)
  • 2. Katholieke Univ. Leuven, Leuven (Belgium)
  • 3. Technische Univ. Munchen, Garching (Germany)
  • 4. Petersburg Nuclear Physics Inst., Gatchina (Russian Federation)

Description

The aim of this work is experimental observation and research of a rare neutron mode, the radiative beta-decay, where a new particle, the radiative gamma-quantum, is formed along with the expected decay products beta-electron, recoil proton and antineutrino. The discovery of this rare neutron decay mode was conducted through identification of triple coincidences events: simultaneous registration of beta electron, proton and radiative gamma-quantum. The statistics collected allow one to deduce the branching ratio BR = (3.2 ± 1.6) x 10-3 in the gamma energy region greater than 35 keV. This value of BR is consistent with standard electroweak theory

Abstract (Russian)

Описываются эксперименты по наблюдению радиационного распада нейтрона с образованием гамма-квантов, электрона, протона отдачи и антинейтрино с помощью тройного совпадения электрона, протона и гамма-кванта. Полученный коэффициент ветвления, равный (3.2 ± 1.6) x 10-3, согласуется с расчетным значением, полученным по электрослабой теории

Additional details

Publishing Information

Journal Title
Pis'ma v Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki
Journal Volume
83
Journal Issue
1-2
Journal Page Range
p. 7-11
ISSN
0370-274X
CODEN
PZETAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39058635
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANGULAR DISTRIBUTION; ANTINEUTRINOS; BETA DECAY; BRANCHING RATIO; COMPARATIVE EVALUATIONS; ELECTRONS; ENERGY DEPENDENCE; GAMMA RADIATION; HADRONIC PARTICLE DECAY; KEV RANGE 10-100; NEUTRONS; PROTONS; RADIATIVE DECAY; RECOILS; TIME DEPENDENCE
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYONS; DECAY; DIMENSIONLESS NUMBERS; DISTRIBUTION; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; EVALUATION; FERMIONS; HADRONS; IONIZING RADIATIONS; KEV RANGE; LEPTONS; MASSLESS PARTICLES; MATTER; NEUTRINOS; NUCLEAR DECAY; NUCLEONS; PARTICLE DECAY; RADIATIONS

Optional Information

Notes
5 refs., 6 figs.