Measurement of exclusive ${\rho }^0$(770) photoproduction in ultraperipheral pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV

Abstract

Exclusive ${\rho }^0$(770) photoproduction is measured for the first time in ultraperipheral pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV with the CMS detector. The cross section $\sigma (\gamma$p $\to$ ${\rho }^0$(770)p) is 11.0 $\pm$ 1.4 (stat) $\pm$ 1.0 (syst) $\mu$b at $⟨W_{\gamma \mathrm{p}}⟩=$ 92.6 GeV for photon-proton centre-of-mass energies $W_{\gamma \mathrm{p}}$ between 29 and 213 GeV. The differential cross section d$\sigma /$d$|t|$ is measured in the interval 0.025 $<|t|<1$ GeV${}^2$ as a function of $W_{\gamma \mathrm{p}}$, 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 $\sigma (\gamma$ p$\to {\rho }^0$(770)p) has a power-law dependence on the photon-proton centre-of-mass, consistent with electron-proton collision measurements performed at HERA. The $W_{\gamma \mathrm{p}}$ dependence of the exponential slope of the differential cross section d$\sigma /$d$|t|$ is also measured.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/FSQ-16-007 (CMS Public Pages)

References in corpus (9)

• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• The CMS trigger system
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• The Physics of Ultraperipheral Collisions at the LHC
• Exclusive J/$\psi$ photoproduction off protons in ultra-peripheral p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Exclusive diffractive processes in electron-ion collisions
• Energy dependence of dissociative $J/\psi$ photoproduction as a signature of gluon saturation at the LHC
• Measurement of $\psi (2S)$ polarisation in $pp$ collisions at $\sqrt{s}=7$ TeV
• Elastic and large t rapidity gap vector meson production in ultraperipheral proton-ion collisions

Cited by in corpus (31)

• Photonuclear and Two-photon Interactions at High-Energy Nuclear Colliders
• The Present and Future of QCD
• Observation of forward neutron multiplicity dependence of dimuon acoplanarity in ultraperipheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Probing small Bjorken-$x$ nuclear gluonic structure via coherent J/$\psi$ photoproduction in ultraperipheral PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Coherent photoproduction of ${\rho }^0$ vector mesons in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• First measurement of coherent ${\rho }^0$ photoproduction in ultra-peripheral Xe-Xe collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=5.44$ TeV
• Probing the gluon tomography in photoproduction of di-pions
• The very forward CASTOR calorimeter of the CMS experiment
• Prospects for quarkonium studies at the high-luminosity LHC
• Coulomb nuclear interference effect in dipion production in ultraperipheral heavy ion collisions
• High-energy $\pi \pi$ scattering without and with photon radiation
• Exclusive production of $\rho$ meson in gamma-proton collisions: $d\sigma /dt$ and the role of helicity flip processes
• Hard color-singlet exchange in dijet events in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Azimuthal correlations within exclusive dijets with large momentum transfer in photon-lead collisions
• Photoproduction of K${}^{+}$K${}^{-}$ pairs in ultra-peripheral collisions
• New opportunities at the photon energy frontier
• Exclusive quarkonium photoproduction: predictions with the Balitsky-Kovchegov equation including the full impact-parameter dependence
• Incoherent $\rho$ meson photoproduction in ultraperipheral nuclear collisions at the LHC
• Probing Quantum Phenomena through Photoproduction in Relativistic Heavy-Ion Collisions
• Exclusive photo- and electroproduction of excited light vector mesons via holographic model
• Role of $\rho -\omega$ interference in semileptonic $B\to {\pi }^{+}{\pi }^{-}\ell {\bar{\nu }}_{\ell }$ decays
• Investigating exclusive ${\rho }^0$ photoproduction within the Regge phenomenology approach
• Physics perspectives of a CMS near-beam proton spectrometer at the HL-LHC
• Coherent photoproduction of light vector mesons off nuclear targets in the dipole picture
• Multiparticle production and initial quasi-temperature from proton induced carbon collisions at $p_{Lab}=31$ GeV/$c$
• First measurement of the forward rapidity gap distribution in pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Observation of coherent $\varphi$(1020) meson photoproduction in ultraperipheral PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.36 TeV
• Exclusive four pion photoproduction in ultraperipheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Light vector meson photoproduction in ultraperipheral heavy ion collisions at the LHC within the Reggeometric Pomeron approach
• SU(3) Gauge Symmetry: An Experimental Review of Diffractive Physics in e+p, p+p, p+A, and A+A Collision Systems
• Probing nuclear structure with the Balitsky-Kovchegov equation in full impact-parameter dependence