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Studies of {phi} decays to f0(980){gamma} and a0(980){gamma} with KLOE at DA{phi}NE

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Abstract

The KLOE experiment [1] has collected {approx} 30pb-1 by the end of the year 2000. A data sample of 17pb-1 has been analyzed so far, searching for {phi} radiative decays into f0(980){gamma} and into a0(980){gamma}. By looking at the five photon final state, corresponding to the two fully neutral decays f0(980) {yields} {pi}0{pi}0 and a0(980) {yields} {eta}{pi}0, {eta} {yields} {gamma}{gamma}, the following branching ratios have been obtained: BR({phi} {yields} f0(980){gamma} {yields} {pi}0{pi}0{gamma}) = (7.9{+-}0.2stat) x 10-5, BR({phi} {yields} a0(980){gamma}) = (5.8{+-}0.5stat) x 10-5. A preliminary analysis of the decay {phi} {yields} a0(980){gamma} {yields} {eta}{pi}0, {eta} {yields} {pi}+{pi}-{pi}0 has given the result: BR({phi} {yields} {eta}{pi}0{gamma}) = (6.7 {+-} 0.9stat) x 10-5. We find for the ratio of the two rates the value (BR({phi}{yields}f{sub 0}(980){gamma})/BR({phi}{yields}a{sub 0}(980){gamma})) = 4.1 {+-} 0.4{sub stat}, which gives the first significant indication of the structure of these states.
Authors:
Valeriani, B [1] 
  1. Institut fuer Experimentelle Kernphysik der Universitaet Karlsruhe - TH im Forschungszentrum, Karlsruhe, Postfach 3640, 76021 Karlsruhe (Germany)
Publication Date:
Jun 07, 2002
DOI:
https://doi.org/10.1063/1.1482525
Product Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 619; Journal Issue: 1; Conference: HADRON 2001: 9. international conference on hadron spectroscopy, Protvino (Russian Federation), 25 Aug - 1 Sep 2001; Other Information: DOI: 10.1063/1.1482525; (c) 2002 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); KLOE Collaboration; PBD: 7 Jun 2002
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; A0-980 MESONS; BRANCHING RATIO; D S MESONS; F0-980 MESONS; HADRONIC PARTICLE DECAY; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; PHOTON-MESON INTERACTIONS; PHOTONS; PION-PION INTERACTIONS; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; RADIATIVE DECAY
OSTI ID:
20620906
Country of Origin:
United States
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0094-243X; APCPCS; TRN: US03C4051064556
Submitting Site:
INIS
Size:
page(s) 716-720
Announcement Date:
Aug 28, 2005

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Citation Formats

Valeriani, B. Studies of {phi} decays to f0(980){gamma} and a0(980){gamma} with KLOE at DA{phi}NE. United States: N. p., 2002. Web. doi:10.1063/1.1482525.
Valeriani, B. Studies of {phi} decays to f0(980){gamma} and a0(980){gamma} with KLOE at DA{phi}NE. United States. https://doi.org/10.1063/1.1482525
Valeriani, B. 2002. "Studies of {phi} decays to f0(980){gamma} and a0(980){gamma} with KLOE at DA{phi}NE." United States. https://doi.org/10.1063/1.1482525.
@misc{etde_20620906,
title = {Studies of {phi} decays to f0(980){gamma} and a0(980){gamma} with KLOE at DA{phi}NE}
 author = {Valeriani, B}
 abstractNote = {The KLOE experiment [1] has collected {approx} 30pb-1 by the end of the year 2000. A data sample of 17pb-1 has been analyzed so far, searching for {phi} radiative decays into f0(980){gamma} and into a0(980){gamma}. By looking at the five photon final state, corresponding to the two fully neutral decays f0(980) {yields} {pi}0{pi}0 and a0(980) {yields} {eta}{pi}0, {eta} {yields} {gamma}{gamma}, the following branching ratios have been obtained: BR({phi} {yields} f0(980){gamma} {yields} {pi}0{pi}0{gamma}) = (7.9{+-}0.2stat) x 10-5, BR({phi} {yields} a0(980){gamma}) = (5.8{+-}0.5stat) x 10-5. A preliminary analysis of the decay {phi} {yields} a0(980){gamma} {yields} {eta}{pi}0, {eta} {yields} {pi}+{pi}-{pi}0 has given the result: BR({phi} {yields} {eta}{pi}0{gamma}) = (6.7 {+-} 0.9stat) x 10-5. We find for the ratio of the two rates the value (BR({phi}{yields}f{sub 0}(980){gamma})/BR({phi}{yields}a{sub 0}(980){gamma})) = 4.1 {+-} 0.4{sub stat}, which gives the first significant indication of the structure of these states.}
 doi = {10.1063/1.1482525}
 journal = []
 issue = {1}
 volume = {619}
 journal type = {AC}
 place = {United States}
 year = {2002}
 month = {Jun}
 }