Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance?

Details Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance? Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance?

2010-05-12

arxiv.org/abs/1005.2105v2

Physics Letters B 691 (2010), pp. 214-218

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1016/j.physletb.2010.06.029

We study whether the nonmonotonic behavior found in the differential cross section of the phi-meson photoproduction near threshold can be described by a resonance. Namely, we add a resonance to a model consisting of Pomeron and (pi,eta) exchange by fiat and see if, with a suitable assignment of spin and parity, mass and width, as well as the coupling constants, one would be able to obtain a good description to all the data reported by the LEPS collaboration in the low-energy region. The resonant contribution is evaluated by using an effective Lagrangian approach. We find that, with the assumption of a J^P=3/2^- resonance with mass of 2.10 +- 0.03 GeV and width of 0.465 +- 0.141 GeV, LEPS data can indeed be well described. The ratio of the helicity amplitudes A_(1/2)/A_(3/2) calculated from the resulting coupling constants differs in sign from that of the known D13(2080). We further find that the addition of this postulated resonance can substantially improve the agreement between the existing theoretical predictions and the recent omega photoproduction data if a large value of the OZI evading parameter x_OZI = 12 is assumed for the resonance.

Affiliated with

Also associated with

No associations

Rating

Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance? 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 Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is the nonmonotonic behavior in the cross section of phi photoproduction near threshold a signature of a resonance? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-499808