Published January 2006
| Version v1
Journal article
Experimental study of direct photon emission in K/it-→ π-π0γ decay using ISTRA+ detector
Creators
- Uvarov, V. A.1
- Akimenko, S. A.1
- Bolotov, V. N.2
- Britvich, G. I.1
- Datsko, K. V.1
- Duk, V. A.2
- Filin, A. P.1
- Inyakin, A. V.1
- Khmelnikov, V. A.1
- Konstantinov, A. S.1
- Konstantinov, V. F.1
- Korolkov, I. Ya.1
- Laptev, S. V.2
- Leontiev, V. M.1
- Novikov, V. P.1
- Obraztsov, V. F.1
- Polyakov, V. A.1
- Polyarush, A. Yu.2
- Romanovsky, V. I.1
- Ronjin, V. M.1
- and others
- 1. Institute for High Energy Physics (Russian Federation)
- 2. Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)
Description
The branching ratio in the charged-pion-kinetic-energy region of 55 to 90 MeV for the direct photon emission in the K-→ π-π0γ decay has been measured using in-flight decays detected with the ISTRA+ setup operating in the 25-GeV/c negative secondary beam of the U-70 PS. The value Br(DE)=[0.37±0.39(stat.)±0.10(syst.)]x10-5 obtained from the analysis of 930 completely reconstructed events is consistent with the average value of two stopped-kaon experiments, but it differs by 2.5 standard deviations from the average value of three in-flight-kaon experiments. The result is also compared with recent theoretical predictions
Additional details
Identifiers
Publishing Information
- Journal Title
- Physics of Atomic Nuclei
- Journal Volume
- 69
- Journal Issue
- 1
- Journal Page Range
- p. 26-34
- ISSN
- 1063-7788
- CODEN
- PANUEO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39088477
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; FORECASTING; GAMMA RADIATION; GEV RANGE 10-100; KAONS MINUS; KINETIC ENERGY; MEV RANGE 10-100; PARTICLE DECAY; PHOTON EMISSION; PIONS MINUS; PIONS NEUTRAL; SECONDARY BEAMS; STANDARDS
- Descriptors DEC
- BEAMS; BOSONS; DECAY; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EMISSION; ENERGY; ENERGY RANGE; GEV RANGE; HADRONS; IONIZING RADIATIONS; KAONS; MESONS; MEV RANGE; PIONS; PSEUDOSCALAR MESONS; RADIATIONS; STRANGE MESONS; STRANGE PARTICLES
Optional Information
- Copyright
- Copyright (c) 2006 Pleiades Publishing, Inc.