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ISR Physics at BaBar

Conference ·
OSTI ID:1038025
A method of measuring e{sup +}e{sup -} annihilation cross sections at low energy {radical}s < 5 GeV, using initial-state radiation, is described. Experimental data from the PEP-II B-factory at 10.6 GeV center-of-mass energy, obtained via ISR, are presented. The cross sections are measured for many processes e{sup +}e{sup -} {yields} 3{pi}, 4{pi}, 2K{pi}, 2K2{pi}, 4K, p{bar p}, {Lambda}{Lambda}, D{bar D}, ... . From the measured cross sections the parameters of known resonances are improved, the baryons form factors are derived and compared with theory predictions. New states, e.g; Y(4260) and Y(2175), for which the internal structure is not yet established, are observed.
Research Organization:
SLAC National Accelerator Laboratory (SLAC)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515
OSTI ID:
1038025
Report Number(s):
SLAC-PUB-14929; arXiv:0911.0235
Country of Publication:
United States
Language:
English

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