Study of e{sup +}e{sup -} --> {pi}{sup +}{pi}{sup -}{pi}{sup 0} process using initial state radiation with BaBar

Technical Report · Tue Aug 17 04:00:00 EDT 2004

DOI:https://doi.org/10.2172/829758· OSTI ID:829758

Aubert, B ^[1]

---

1. SLAC

The process e{sup +}e{sup -} --> {pi}{sup +}{pi}{sup -}{pi}{sup 0}{gamma} has been studied at a center-of-mass energy near the {Upsilon}(4S) resonance using a 89.3 fb{sup -1} data sample collected with the BABAR detector at the PEP-II collider. From the measured 3{pi} mass spectrum the authors have obtained the products of branching fractions for the {omega} and {phi} mesons, B({omega} --> e{sup +}e{sup -})B({omega} --> 3{pi}) = (6.70 {+-} 0.06 {+-} 0.27) x 10{sup -5} and B({phi} --> e{sup +}e{sup -})B({phi} --> 3{pi}) = (4.30 {+-} 0.08 {+-} 0.21) x 10{sup -5}, and evaluated the e{sup +}e{sup -} --> {pi}{sup +}{pi}{sup -}{pi}{sup 0} cross section for the e{sup +}e{sup -} center-of-mass energy range 1.05 to 3.00 GeV. About 900 e{sup +}e{sup -} --> J/{psi}{gamma} --> {pi}{sup +}{pi}{sup -}{pi}{sup 0} events have been selected and the branching fraction B(J/{psi} --> {pi}{sup +}{pi}{sup -}{pi}{sup 0}) = (2.18 {+-} 0.19)% has been measured.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 829758
• Report Number(s): SLAC-PUB-10624
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
ENERGY RANGE
MESONS
RADIATIONS
RESONANCE