Observation of e+e- --> rho+rho- near sqrt(s)=10.58 GeV

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

8 pages, 4 postscript figures, submitted to PRD-RC

Scientific paper

10.1103/PhysRevD.78.071103

We report the first observation of $e^+e^- \to \rho^+\rho^-$, in a data sample of 379 $fb^{-1}$ collected with the BABAR detector at the {PEP-II} $e^+e^-$ storage ring at center-of-mass energies near $\sqrt{s} = 10.58 GeV. We measure a cross section of $\sigma({e^+e^-\} \to \rho^+ \rho^-) = {19.5 \pm 1.6(stat) \pm 3.2(syst) fb}$. Assuming production through single-photon annihilation, there are three independent helicity amplitudes. We measure the ratios of their squared moduli to be $|{F}_{00}|^2 : |{F}_{10}|^2 : |{F}_{11}|^2 = 0.51 \pm 0.14(stat) \pm 0.07(syst) : 0.10 \pm 0.04(stat) \pm 0.01(syst) : 0.04 \pm 0.03(stat) \pm 0.01(syst)$. The $|{F}_{00}|^2$ result is inconsistent with the prediction of 1.0 made by QCD models with a significance of 3.1 standard deviations including systematic uncertainties.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Observation of e+e- --> rho+rho- near sqrt(s)=10.58 GeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observation of e+e- --> rho+rho- near sqrt(s)=10.58 GeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of e+e- --> rho+rho- near sqrt(s)=10.58 GeV will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-97806

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.