Skip to main content
eScholarship
Open Access Publications from the University of California

UC Riverside

UC Riverside Previously Published Works bannerUC Riverside

Measurement of exclusive ρ7700  photoproduction in ultraperipheral pPb collisions at sNN=5.02Te.

Abstract

Exclusive ρ7700 photoproduction is measured for the first time in ultraperipheral pPb collisions at sNN=5.02Te with the CMS detector. The cross section σ(γp→ρ7700p) is 11.0±1.4(stat)±1.0(syst) μ b at ⟨Wγp⟩=92.6Ge for photon-proton centre-of-mass energies Wγp between 29 and 213Ge . The differential cross section dσ/d|t| is measured in the interval 0.025<|t|<1Ge2 as a function of Wγp , where t is the squared four-momentum transfer at the proton vertex. The results are compared with previous measurements and theoretical predictions. The measured cross section σ(γp→ρ7700p) has a power-law dependence on the photon-proton centre-of-mass, consistent with electron-proton collision measurements performed at HERA. The Wγp dependence of the exponential slope of the differential cross section dσ/d|t| is also measured.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View