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Busenitz, J.; Olszewski, C.; Callahan, Patrick J.; Gladding, G. E.; Wattenberg, A.; Binkley, M.; Butler, J. N.; Cumalat, J. P.; Gaines, I.; Gormley, M.; Harding, David J.; Loveless, R. L.; Peoples, J.

doi:10.1103/physrevd.40.1

Cited by 66 publications

(61 citation statements)

References 49 publications

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“…5 to results at lower γp centre-of-mass energies [2,27]. The data show a weak energy dependence of the cross section from 2 GeV to 70 GeV, as predicted by Regge theory [4].…”

Section: Total Elastic φ Photoproduction Cross Sectionmentioning

confidence: 91%

“…Fig. 4b shows the value of the slope parameter b measured by this experiment together with the results of lower energy photoproduction experiments [2,26]. The ZEUS measurement, when compared to the fixed target measurements, shows a weak energy dependence of b, as predicted by Regge theory [4].…”

Section: Elastic φ Photoproduction Cross Sectionmentioning

confidence: 99%

“…The kinematics of the inclusive scattering of unpolarised positrons and protons is described by the positron-proton centre-of-mass energy and any two of the following variables: 2 , the negative of the four-momentum squared of the exchanged photon;…”

Section: Kinematicsmentioning

confidence: 99%

“…Elastic photoproduction of φ mesons, γp → φp, has previously been studied at photon-proton centre-of-mass energies up to W ≈ 17 GeV in fixed target experiments [1,2,3]. At these energies the reaction γp → φp has the characteristics of a soft diffractive process: a cross section rising weakly with the centre-of-mass energy, a steep forward diffractive peak in the t distribution, where t is the four-momentum transfer squared at the proton vertex, and s-channel helicity conservation.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of elastic φ photoproduction at HERA

et al. 1996

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The production of φ mesons in the reaction e + p → e + φp (φ → K + K − ) at a median Q 2 of 10 −4 GeV 2 has been studied with the ZEUS detector at HERA. The differential φ photoproduction cross section dσ/dt has an exponential shape and has been determined in the kinematic range 0.1 < |t| < 0.5 GeV 2 and 60 < W < 80 GeV. An integrated cross section of σ γp→φp = 0.96 ± 0.19 +0.21 −0.18 µb has been obtained by extrapolating to t = 0. When compared to lower energy data, the results show a weak energy dependence of both σ γp→φp and the slope of the t distribution. The φ decay angular distributions are consistent with s-channel helicity conservation. From lower energies to HERA energies, the features of φ photoproduction are compatible with those of a soft diffractive process.

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“…5 to results at lower γp centre-of-mass energies [2,27]. The data show a weak energy dependence of the cross section from 2 GeV to 70 GeV, as predicted by Regge theory [4].…”

Section: Total Elastic φ Photoproduction Cross Sectionmentioning

confidence: 91%

Section: Elastic φ Photoproduction Cross Sectionmentioning

confidence: 99%

Section: Kinematicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurement of elastic φ photoproduction at HERA

et al. 1996

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“…Past photoproduction experiments have observed the mass of a resonance near 1750 MeV /c 2 as an enhancement in the mass of K + K − [10]. Majority of the experiments suffered from low statistics with about few hundred events at best.…”

Section: Strangeoniamentioning

confidence: 99%

Search for Strangeonia in Photoproduction using CLAS

Saini¹,

Credé²,

Eugenio³

et al. 2010

AIP Conference Proceedings

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Abstract.The HyCLAS experiment at Jefferson Lab is a program to search for new and unusual mesons produced via photoproduction. The strangeonia sector is poorly known and a main component of this program is a search for new strangeonium states. The reaction γ p → p φ η is an ideal channel to look for strangeonium states due to the strangeness content of both the φ and η. The data was acquired at the JLAB CLAS facility using a 4 -5.5 GeV tagged photon beam. The φ meson is identified via the K + K − decay. The recoil proton is observed in the CLAS spectrometer and the η meson is identified through the missing mass. Also of interest is the search for strangeonia decaying to φ π 0 and φ ω. These channels are OZI suppressed for qq mesons and an observation of a meson decaying to these channels would provide a strong evidence of mesons beyond qq. Preliminary results describing the data quality, kinematics and dynamics will be shown.

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Measurement of elastic $\omega$ photoproduction at HERA

Derrick

Campbell-Robson

Cassidy

et al. 1996

Zeitschrift f�r Physik C Particles and Fields

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The reaction γp → ωp (ω → π + π − π 0 and π 0 → γγ) has been studied in ep interactions using the ZEUS detector at photon-proton centre-of-mass energies between 70 and 90 GeV and |t| < 0.6 GeV 2 , where t is the squared four momentum transferred at the proton vertex. The elastic ω photoproduction cross section has been measured to be σ γp→ωp = 1.21 ± 0.12 ± 0.23 µb. The differential cross section dσ γp→ωp /d|t| has an exponential shape e −b|t| with a slope b = 10.0 ± 1.2 ± 1.3 GeV −2 . The angular distributions of the decay pions are consistent with s-channel helicity conservation. When compared to low energy data, the features of ω photoproduction as measured at HERA energies are in agreement with those of a soft diffractive process. Previous measurements of the ρ 0 and φ photoproduction cross sections at HERA show a similar behaviour.

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High-energy photoproduction ofπ+π−π0,
J. Busenitz
¹
,
C. Olszewski
²
,
Patrick J. Callahan
³

et al.

Cited by 66 publications

References 49 publications

Measurement of elastic φ photoproduction at HERA

Measurement of elastic φ photoproduction at HERA

Search for Strangeonia in Photoproduction using CLAS

Measurement of elastic $\omega$ photoproduction at HERA

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High-energy photoproduction ofπ+π−π0,J. Busenitz1, C. Olszewski2, Patrick J. Callahan3 et al.

Cited by 66 publications

References 49 publications

Measurement of elastic φ photoproduction at HERA

Measurement of elastic φ photoproduction at HERA

Search for Strangeonia in Photoproduction using CLAS

Measurement of elastic $\omega$ photoproduction at HERA

Contact Info

Product

Resources

About

High-energy photoproduction ofπ+π−π0,
J. Busenitz
¹
,
C. Olszewski
²
,
Patrick J. Callahan
³

et al.