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The most recent data on differential cross sections and photon beam asymmetries $\Sigma$ from the LEPS2/BGOegg Collaboration for the $\gamma p \to f_0(980) p$ reaction are analyzed within a tree-level effective Lagrangian approach. The…

High Energy Physics - Phenomenology · Physics 2024-08-22 Neng-Chang Wei , Ai-Chao Wang , Fei Huang

Experimental results on the $\Sigma^+(1189)$ hyperon transverse polarization in photoproduction on a hydrogen target using the CLAS detector at Jefferson laboratory are presented. The $\Sigma^+(1189)$ was reconstructed in the exclusive…

Nuclear Experiment · Physics 2013-04-24 C. S. Nepali , M. Amaryan , K. P. Adhikari , M. Aghasyan , S. Anefalos Pereira , H. Baghdasaryan , J. Ball , M. Battaglieri , V. Batourine , I. Bedlinskiy , A. S. Biselli , J. Bono , S. Boiarinov , W. J. Briscoe , S. Bültmann , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , P. L. Cole , P. Collins , M. Contalbrigo , V. Crede , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , D. Doughty , R. Dupre , A. El Alaoui , L. El Fassi , G. Fedotov , S. Fegan , R. Fersch , J. A. Fleming , M. Y. Gabrielyan , N. Gevorgyan , K. L. Giovanetti , F. X. Girod , D. I. Glazier , J. T. Goetz , W. Gohn , E. Golovatch , R. W. Gothe , K. A. Griffioen , M. Guidal , N. Guler , K. Hafidi , H. Hakobyan , C. Hanretty , N. Harrison , D. Heddle , K. Hicks , D. Ho , M. Holtrop , C. E. Hyde , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , H. S. Jo , D. Keller , M. Khandaker , P. Khetarpal , A. Kim , W. Kim , A. Klein , F. J. Klein , S. Koirala , V. Kubarovsky , S. E. Kuhn , S. V. Kuleshov , N. D. Kvaltine , H. Y. Lu , I . J . D. MacGregor , N. Markov , M. Mayer , B. McKinnon , T. Mineeva , M. Mirazita , V. Mokeev , R. A. Montgomery , E. Munevar , C. Munoz Camacho , P. Nadel-Turonski , S. Niccolai , G. Niculescu , I. Niculescu , M. Osipenko , A. I. Ostrovidov , L. L. Pappalardo , R. Paremuzyan , K. Park , S. Park , E. Pasyuk , E. Phelps , J. J. Phillips , S. Pisano , O. Pogorelko , S. Pozdniakov , J. W. Price , S. Procureur , D. Protopopescu , A. J. R. Puckett , B. A. Raue , D. Rimal , M. Ripani , B. G. Ritchie , G. Rosner , P. Rossi , F. Sabatié , M. S. Saini , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , H. Seraydaryan , Y. G. Sharabian , G. D. Smith , D. I. Sober , D. Sokhan , S. S. Stepanyan , S. Stepanyan , I. I. Strakovsky , S. Strauch , M. Taiuti , W. Tang , C. E. Taylor , Ye Tian , S. Tkachenko , B. Torayev , B. Vernarsky , A. V. Vlassov , H. Voskanyan , E. Voutier , N. K. Walford , D. P. Watts , L. B. Weinstein , D. P. Weygand , N. Zachariou , L. Zana , J. Zhang , Z. W. Zhao , I. Zonta , J. Zhang

The differential cross section for the gamma +n --> pi- + p and the gamma + p --> pi+ n processes were measured at Jefferson Lab. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4 GeV.…

Nuclear Experiment · Physics 2012-08-27 Jefferson Lab Hall A Collaboration , 104 Collaboration , L. Y. Zhu

We report the first measurement of differential and total cross sections for the ${\gamma}d \to K^0{\Lambda}(p)$ reaction, using data from the CLAS detector at the Thomas Jefferson National Accelerator Facility. Data collected during two…

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.…

The properties of the $\Lambda(1405)$ resonance have been investigated from radiative decay of $K^- p\to Y\gamma$ and photoproduction $\gamma p\to K^+\Lambda(1405)$ within the framework of the isobar model. For a consistent result with…

Nuclear Theory · Physics 2009-11-03 Tae Keun Choi , Kyung Sik Kim , Byung Geel Yu

The differential cross section for the process $\gamma \gamma \to \eta \pi^0$ has been measured in the kinematic range $0.84 \GeV < W < 4.0 \GeV$, $|\cos \theta^*|<0.8$, where $W$ and $\theta^*$ are the energy and $\pi^0$ (or $\eta$)…

High Energy Physics - Experiment · Physics 2019-08-13 S. Uehara

Differential cross sections for the reaction $\gamma p \to p \pi^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess…

High Energy Physics - Experiment · Physics 2010-04-06 M. Dugger , B. G. Ritchie , J. P. Ball , P. Collins , E. Pasyuk , R. A. Arndt , W. J. Briscoe , I. I. Strakovsky , R. L. Workman , CLAS Collaboration

High-quality cross sections for the reaction gamma+d->pi^0+d have been measured using the CLAS at Jefferson Lab over a wide energy range near and above the eta-meson photoproduction threshold. At backward c.m. angles for the outgoing pions,…

Nuclear Experiment · Physics 2019-08-14 Y. Ilieva , B. L. Berman , A. E. Kudryavtsev , I. I. Strakovsky , V. E. Tarasov

Recent studies within the framework of chiral unitary theory produce the $\Lambda (1520)$ resonance, among several others, as a dynamically generated resonance from the interaction of the baryon decuplet and the meson octet. The $\Lambda…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. Roca , E. Oset , H. Toki

Inclusive D^{*+-} production in two-photon collisions is studied with the L3 detector at LEP, using 683 pb^{-1} of data collected at centre-of-mass energies from 183 to 208 GeV. Differential cross sections are determined as functions of the…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

The photoproduction of $\gamma p \to K^+ \Sigma^0(1385)$ is investigated based on an effective Lagrangian approach using the tree-level Born approximation, with the purpose of understanding the reaction mechanisms and resonance contents and…

High Energy Physics - Phenomenology · Physics 2020-04-22 Ai-Chao Wang , Wen-Ling Wang , Fei Huang

Inclusive $K^0$ and $\Lambda$ photoproduction has been investigated at HERA with the H1 detector at an average photon-proton center of mass energy of 200 GeV in the transverse momentum range 0.5 <p_t <5 GeV. The production rates as a…

High Energy Physics - Experiment · Physics 2008-11-26 C. Adloff

Measurements of the near threshold Lambda and Sigma0 production via the pp-->pK+Lambda/Sigma0 reaction at COSY--11 have shown that the Lambda/Sigma0 cross section ratio exceeds the value at high excess energies Q>=300 MeV by an order of…

A measurement is presented of differential cross sections for the Higgs boson (H) production in pp collisions at sqrt(s) = 8 TeV. The analysis exploits the H to gamma gamma decay in data corresponding to an integrated luminosity of 19.7…

High Energy Physics - Experiment · Physics 2016-01-18 CMS Collaboration

We report measurements of the exclusive electroproduction of $K^+\Lambda$ and $K^+\Sigma^0$ final states from an unpolarized proton target using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The separated…

Nuclear Experiment · Physics 2013-03-14 D. S. Carman , K. Park , B. A. Raue , CLAS Collaboration

A comprehensive analysis of all available data on cross sections and spin-dependent observables for the $\gamma p \to K^+ \Sigma^0(1385)$, $\gamma n \to K^+ \Sigma^-(1385)$, and $\pi^+ p \to K^+ \Sigma^+(1385)$ reactions is performed within…

High Energy Physics - Phenomenology · Physics 2025-03-21 Ai-Chao Wang , Neng-Chang Wei , Fei Huang

The exclusive photoproduction reactions $\gamma p \to J/\psi(1S) p$ and $\gamma p \to \psi(2S) p$ have been measured at an $ep$ centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb$^{-1}$.…

The interaction mechanism of the $\Sigma$(1385) photoproduction from proton is investigated within a Regge-plus-resonance approach based on the experimental data released by CLAS Collaboration recently. The t-channel and u-channel…

Nuclear Theory · Physics 2014-06-26 Jun He

The differential cross section, $d\sigma/dt$ for $\omega$ meson exclusive photoproduction on the proton above the resonance region ($2.6<W<2.9$ GeV) was measured up to a momentum transfer $-t = 5$ GeV$^2$ using the CLAS detector at…

High Energy Physics - Experiment · Physics 2010-04-06 M. Battaglieri , M. Brunoldi , R. De Vita , J. M. Laget , M. Osipenko , M. Ripani , M. Taiuti
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