Photoproduction of phi(1020) mesons on t...

Forward coherent $\phi$-meson photoproduction from deuterons near threshold

March 23, 2007

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W. C. LEPS Collaboration Chang, K. LEPS Collaboration Horie, S. LEPS Collaboration Shimizu, M. LEPS Collaboration Miyabe, D. S. LEPS Collaboration Ahn, J. K. LEPS Collaboration Ahn, H. LEPS Collaboration Akimune, Y. LEPS Collaboration Asano, S. LEPS Collaboration Date, H. LEPS Collaboration Ejiri, S. LEPS Collaboration Fukui, H. LEPS Collaboration Fujimura, M. LEPS Collaboration Fujiwara, S. LEPS Collaboration Hasegawa, K. LEPS Collaboration Hicks, T. LEPS Collaboration Hotta, K. LEPS Collaboration Imai, T. LEPS Collaboration Ishikawa, T. LEPS Collaboration Iwata, Y. LEPS Collaboration Kato, H. LEPS Collaboration Kawai, Z. Y. LEPS Collaboration Kim, K. LEPS Collaboration Kino, H. LEPS Collaboration Kohri, N. LEPS Collaboration Kumagai, P. J. LEPS Collaboration Lin, S. LEPS Collaboration Makino, T. LEPS Collaboration Matsuda, T. LEPS Collaboration Matsumura, N. LEPS Collaboration Matsuoka, T. LEPS Collaboration Mibe, Y. LEPS Collaboration Miyachi, M. LEPS Collaboration Morita, N. LEPS Collaboration Muramatsu, T. LEPS Collaboration Nakano, M. LEPS Collaboration Niiyama, M. LEPS Collaboration Nomachi, Y. LEPS Collaboration Ohashi, H. LEPS Collaboration Ohkuma, T. LEPS Collaboration Ooba, D. S. LEPS Collaboration Oshuev, C. LEPS Collaboration Rangacharyulu, A. LEPS Collaboration Sakaguchi, T. LEPS Collaboration Sasaki, P. M. LEPS Collaboration Shagin, Y. LEPS Collaboration Shiino, A. LEPS Collaboration Shimizu, H. LEPS Collaboration Shimizu, Y. LEPS Collaboration Sugaya, M. LEPS Collaboration Sumihama, Y. LEPS Collaboration Toi, H. LEPS Collaboration Toyokawa, A. LEPS Collaboration Wakai, C. W. LEPS Collaboration Wang, S. C. LEPS Collaboration Wang, K. LEPS Collaboration Yonehara, T. LEPS Collaboration Yorita, M. LEPS Collaboration Yoshimura, ... , Zegers R. G. T. LEPS Collaboration

Nuclear Experiment

High Energy Physics - Experi...

Differential cross sections and decay asymmetries for coherent $\phi$-meson photoproduction from deuterons were measured for the first time at forward angles using linearly polarized photons at $E_{\gamma}$= 1.5-2.4 GeV. This reaction offers a unique way to directly access natural-parity Pomeron dynamics and gluon exchange at low energies. The cross sections at zero degrees increase with increasing photon energy. The decay asymmetries demonstrate a complete dominance of natur...

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Electroproduction of p \pi^{+} \pi^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

September 9, 2008

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G. V. for the CLAS Collaboration Fedotov, V. I. for the CLAS Collaboration Mokeev, V. D. for the CLAS Collaboration Burkert, L. for the CLAS Collaboration Elouadrhiri, E. N. for the CLAS Collaboration Golovatch, B. S. for the CLAS Collaboration Ishkhanov, ... , Shvedunov N. V. for the CLAS Collaboration

Nuclear Experiment

This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process $e p \to e' p \pi^{+} \pi^{-} $. The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the so-far unexplored kinematic region of photon virtuality 0.2 $<$ $Q^{2}$ $<$ 0.6 GeV$^{2}$ and invariant mass of the final hadron system $W$ from 1.3 to 1.57 GeV. For the first time, nine independent 1-fold d...

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Photoproduction of the $f_2(1270)$ meson using the CLAS detector

October 30, 2020

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M. ~Carver, A. ~Celentano, K. ~Hicks, L. ~Marsicano, V. ~Mathieu, A. ~Pilloni, K. P. ~Adhikari, S. Adhikari, M. J. ~Amaryan, Giovanni Angelini, H. ~Atac, N. A. ~Baltzell, L. Barion, M. ~Battaglieri, I. ~Bedlinskiy, Fatiha Benmokhtar, A. ~Bianconi, A. S. ~Biselli, M. ~Bondi, F. ~Bossù, S. ~Boiarinov, W. J. ~Briscoe, W. K. ~Brooks, D. ~Bulumulla, V. D. ~Burkert, D. S. ~Carman, J. C. ~Carvajal, P. ~Chatagnon, T. ~Chetry, G. ~Ciullo, L. ~Clark, B. A. ~Clary, P. L. ~Cole, M. ~Contalbrigo, V. ~Crede, A. ~D'Angelo, N. ~Dashyan, R. ~De~Vita, M. Defurne, A. ~Deur, S. Diehl, C. ~Djalali, M. ~Dugger, R. ~Dupre, H. ~Egiyan, M. ~Ehrhart, A. ~El~Alaoui, L. ~El~Fassi, P. ~Eugenio, G. ~Fedotov, S. ~Fegan, A. ~Filippi, G. ~Gavalian, N. ~Gevorgyan, G. P. ~Gilfoyle, F. X. ~Girod, R. W. ~Gothe, K. A. ~Griffioen, K. ~Hafidi, H. ~Hakobyan, M. ~Hattawy, T. B. ~Hayward, D. ~Heddle, M. ~Holtrop, Q. ~Huang, C. E. ~Hyde, Y. ~Ilieva, D. G. ~Ireland, E. L. ~Isupov, D. ~Jenkins, H. S. ~Jo, K. ~Joo, S. ~ Joosten, D. ~Keller, A. ~Khanal, M. ~Khandaker, A. ~Kim, C. W. ~Kim, F. J. ~Klein, A. ~Kripko, V. ~Kubarovsky, L. ~Lanza, M. ~Leali, P. ~Lenisa, K. ~Livingston, I. J. D. ~MacGregor, D. ~Marchand, V. ~Mascagna, M. E. ~McCracken, B. ~McKinnon, Z. E. ~Meziani, V. ~Mokeev, A~Movsisyan, E. ~Munevar, C. ~Munoz~Camacho, P. ~Nadel-Turonski, K. ~Neupane, S. ~Niccolai, G. ~Niculescu, M. ~Osipenko, A. I. ~Ostrovidov, M. ~Paolone, L. L. ~Pappalardo, R. ~Paremuzyan, E. ~Pasyuk, W. ~Phelps, O. ~Pogorelko, Y. ~Prok, D. ~Protopopescu, M. ~Ripani, B. G. ~Ritchie, J. ~Ritman, A. ~Rizzo, G. ~Rosner, J. ~Rowley, F. ~Sabatié, C. ~Salgado, A. ~Schmidt, R. A. ~Schumacher, Y. G. ~Sharabian, U. ~Shrestha, D. ~Sokhan, O. ~Soto, N. ~Sparveris, S. ~Stepanyan, I. I. ~Strakovsky, S. ~Strauch, N. ~Tyler, R. ~Tyson, M. ~Ungaro, L. ~Venturelli, H. ~Voskanyan, E. ~Voutier, D. P. ~Watts, K. ~Wei, X. ~Wei, B. ~Yale, N. ~Zachariou, ... , ~Zhao Z. W.

Nuclear Experiment

High Energy Physics - Experi...

The quark structure of the $f_2(1270)$ meson has, for many years, been assumed to be a pure quark-antiquark ($q\bar{q}$) resonance with quantum numbers $J^{PC} = 2^{++}$. Recently, it was proposed that the $f_2(1270)$ is a molecular state made from the attractive interaction of two $\rho$-mesons. Such a state would be expected to decay strongly to final states with charged pions, due to the dominant decay $\rho \to \pi^+ \pi^-$, whereas decay to two neutral pions would likely...

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Pomeron, nucleon-resonance, and $(0^+,0^-,1^+)$-meson contributions in $\phi$-meson photoproduction

April 10, 2019

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Sang-Ho Kim, Seung-il Nam

High Energy Physics - Phenom...

High Energy Physics - Experi...

Nuclear Experiment

Nuclear Theory

We investigate the reaction mechanism of the $\phi$-meson photoproduction off the proton target, i.e., $\gamma p\to\phi p$, up to $\sqrt{s}=2.8$ GeV. For this purpose, we employ an effective Lagrangian approach in the tree-level Born approximation, and we employ various experimental and theoretical inputs. As a theoretical setup, the vectorlike Pomeron ($C=+1$) is taken into account as a parameterized two-gluon exchange contribution. We also consider $f_1(1285)$ axial-vector-...

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The differential production cross section of the phi(1020) meson in sqrt(s)=7 TeV pp collisions measured with the ATLAS detector

February 25, 2014

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ATLAS Collaboration The

High Energy Physics - Experi...

A measurement is presented of the phi to K+K- production cross section at sqrt(s) = 7 TeV using pp collision data corresponding to an integrated luminosity of 383 mub-1, collected with the ATLAS experiment at the LHC. Selection of phi(1020) mesons is based on the identification of charged kaons by their energy loss in the pixel detector. The differential cross section is measured as a function of the transverse momentum, pTphi, and rapidity, |yphi|, of the phi(1020) meson in ...

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First measurement of direct $f_0(980)$ photoproduction on the proton

November 11, 2008

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Collaboration CLAS, M. Battaglieri, ... , Szczepaniak A. P.

High Energy Physics - Experi...

We report on the results of the first measurement of exclusive $f_0(980)$ meson photoproduction on protons for $E_\gamma=3.0 - 3.8$ GeV and $-t = 0.4-1.0$ GeV$^2$. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the $\pi^+ \pi^-$ channel by performing a partial wave analysis of the reaction $\gamma p \to p \pi^+ \pi^-$. Clear evidence of the $f_0(980)$ meson was found in the interfer...

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Hard Excluseive $\Phi$ and $J/\Psi$ Photoproduction off a Proton

November 4, 2014

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A. T. Goritschnig, B. Melic, ... , Schweiger W.

High Energy Physics - Phenom...

Nuclear Theory

We study the photoproduction of the vector mesons $\Phi$ and $J/\Psi$ off a proton in the kinematical regime of large energies and scattering angles within the framework of perturbative QCD. Our investigations are based on the hard scattering approach. This means that the hadrons are replaced by their valence Fock states and scattering on the partonic level is described by tree graphs in which the large transferred momentum is redistributed between the valence partons via the...

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Measurements of the $\gamma_{v} p \rightarrow p' \pi^{+} \pi^{-}$ cross section with the CLAS detector for $0.4$ GeV$^{2}$ $< Q^{2} <$ $1.0$ GeV$^{2}$ and $1.3$ GeV $< W <$ $1.825$ GeV

April 14, 2018

82% Match

G. V. Fedotov, Iu. A. Skorodumina, V. D. Burkert, R. W. Gothe, K. Hicks, ... , Collaboration the CLAS

Nuclear Experiment

High Energy Physics - Experi...

New results on the single-differential and fully-integrated cross sections for the process $\gamma_{v} p \rightarrow p' \pi^{+} \pi^{-}$ are presented. The experimental data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the kinematic region of the reaction invariant mass $W$ from 1.3 to 1.825 GeV and the photon virtuality $Q^2$ from 0.4 to 1.0 GeV$^2$. The cross sections were obtained in narrow $Q^{2}$ bins (0.05 GeV$^{2}$) wi...

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Measurement of neutral mesons in p+p collisions at sqrt(s) = 200 GeV and scaling properties of hadron production

May 20, 2010

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A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, J. Asai, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, A. T. Basye, S. Bathe, S. Batsouli, V. Baublis, C. Baumann, A. Bazilevsky, S. Belikov, R. Bennett, A. Berdnikov, Y. Berdnikov, A. A. Bickley, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, H. Buesching, V. Bumazhnov, G. Bunce, S. Butsyk, C. M. Camacho, S. Campbell, B. S. Chang, W. C. Chang, J. -L. Charvet, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. Citron, C. R. Cleven, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgő, T. Dahms, S. Dairaku, K. Das, G. David, M. B. Deaton, K. Dehmelt, H. Delagrange, A. Denisov, D. d'Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, M. Donadelli, O. Drapier, A. Drees, K. A. Drees, A. K. Dubey, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, F. Ellinghaus, W. S. Emam, T. Engelmore, A. Enokizono, H. En'yo, S. Esumi, K. O. Eyser, B. Fadem, D. E. Fields, M. Jr. Finger,, M. Finger, ... , ...

High Energy Physics - Experi...

Nuclear Experiment

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K^0_S , \omega, \eta prime, and \phi mesons in p + p collisions at = 200 GeV. Measurements \omega and \phi production in different decay channels give consistent results. New results for the \phi are in agreement with previously published data and extend the measured pT coverage. The spectral shapes of all hadron transverse momentum distribution...

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Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA

October 19, 1999

82% Match

Collaboration ZEUS

High Energy Physics - Experi...

Elastic and proton-dissociative photoproduction of $\rho^0$, $\phi$ and $J/\psi$ vector mesons ($\gamma p\to Vp$, $\gamma p\to VN$, respectively) have been measured in e^+p interactions at HERA up to -t=3 GeV$^2$, where t is the four-momentum transfer squared at the photon-vector meson vertex. The analysis is based on a data sample in which photoproduction reactions were tagged by detection of the scattered positron in a special-purpose calorimeter. This limits the photon vir...

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Photoproduction of phi(1020) mesons on the proton at large momentum transfer

Forward coherent $\phi$-meson photoproduction from deuterons near threshold

Electroproduction of p \pi^{+} \pi^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

Photoproduction of the $f_2(1270)$ meson using the CLAS detector

Pomeron, nucleon-resonance, and $(0^+,0^-,1^+)$-meson contributions in $\phi$-meson photoproduction

The differential production cross section of the phi(1020) meson in sqrt(s)=7 TeV pp collisions measured with the ATLAS detector

First measurement of direct $f_0(980)$ photoproduction on the proton

Hard Excluseive $\Phi$ and $J/\Psi$ Photoproduction off a Proton

Measurements of the $\gamma_{v} p \rightarrow p' \pi^{+} \pi^{-}$ cross section with the CLAS detector for $0.4$ GeV$^{2}$ $< Q^{2} <$ $1.0$ GeV$^{2}$ and $1.3$ GeV $< W <$ $1.825$ GeV

Measurement of neutral mesons in p+p collisions at sqrt(s) = 200 GeV and scaling properties of hadron production

Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA