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Study of thee+e−→π+π−π0process using initial state radiation withBABAR
- Source :
- Physical Review D. 70
- Publication Year :
- 2004
- Publisher :
- American Physical Society (APS), 2004.
-
Abstract
- The process e+e- --> pi+ pi- pi0 gamma has been studied at a center-of-mass energy near the Y(4S) resonance using a 89.3 fb-1 data sample collected with the BaBar detector at the PEP-II collider. From the measured 3pi mass spectrum we have obtained the products of branching fractions for the omega and phi mesons, B(omega --> e+e-)B(omega --> 3pi)=(6.70 +/- 0.06 +/- 0.27)10-5 and B(phi --> e+e-)B(phi --> 3pi)=(4.30 +/- 0.08 +/- 0.21)10-5, and evaluated the e+e- --> pi+ pi- pi0 cross section for the e+e- center-of-mass energy range 1.05 to 3.00 GeV. About 900 e+e- --> J/psi gamma --> pi+ pi- pi0 gamma events have been selected and the branching fraction B(J/psi --> pi+ pi- pi0)=(2.18 +/- 0.19)% has been measured.
- Subjects :
- Physics
Nuclear and High Energy Physics
Meson
010308 nuclear & particles physics
Branching fraction
Electron–positron annihilation
Analytical chemistry
Radiation
7. Clean energy
01 natural sciences
Omega
Nuclear physics
0103 physical sciences
Mass spectrum
Pi
010306 general physics
Bhabha scattering
Subjects
Details
- ISSN :
- 15502368 and 15507998
- Volume :
- 70
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi...........4a8215685cfb128c0804623f9676baef