R. Baldini Ferroli
Published 2005-12-14Version 1
BaBar has measured with unprecedented accuracy the e+e- --> ppbar cross section from the threshold up to Q^2 ~ 20 GeV^2/c^4, finding out an unexpected cross section, with plateaux and negative steps. Evidence for a ratio |G_E/G_M|>1 has also been found as well as a sudden variation in |G_M| just above the threshold.
Comments: Talk given at EPS International Europhysics Conference on High Energy Physics (HEPP-EPS 2005), Lisbon, Portugal, 21-27 Jul 2005. 5 pages, 4 figures
Journal: PoS HEP2005:285,2006
Off-shell $W$-pair production in $e^+ e^-$-annihilation. Initial state radiation
Reconciling the X(4630) with the Y(4660)
Breakdown of Coherence ?
