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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

We report here differential cross sections for the reaction $\gamma p \to K^{*0}\Sigma^+$ for the first time with high statistics. The measurements were done using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Data were…

Nuclear Experiment · Physics 2017-08-23 I. Hleiqawi , K. Hicks

New results concerning the production of neutral strange particles, $K^0$ and $\Lambda$ in Ni + Ni collisions at 1.93$A$ GeV, measured with the FOPI detector at GSI-Darmstadt, are presented. Rapidity density distributions and Boltzmann…

Nuclear Experiment · Physics 2007-08-21 M. Merschmeyer , X. Lopez , N. Bastid , P. Crochet , N. Herrmann , FOPI Collaboration

The CLAS collaboration has recently completed first measurements of the double polarization observables C_x and C_z for the reactions K^+Lambda and K^+Sigma^o photoproduction. C_x and C_z are the beam-recoil polarization asymmetries…

Nuclear Experiment · Physics 2017-08-23 Robert Bradford , Reinhard Schumacher

The NA35 experiment used several independent methods to determine the strange particle production in p+S and S+A collisions. The different techniques show consistent results. Strangeness conservation in full phase space is used as an…

High Energy Physics - Phenomenology · Physics 2022-02-23 Juergen Eschke , NA35 Collaboration

Strange baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The analysis is based on data collected at e+e- centre-of-mass energies from 91 GeV to 208 GeV, corresponding to an integrated luminosity of 844…

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

The search for missing nucleon resonances using coupled channel analysis has mostly been concentrated on $N\pi$ and $KY$ channels, while the contributions of $K^*Y$ and $KY^*$ channels have not been investigated thoroughly mostly due to the…

High Energy Physics - Experiment · Physics 2019-08-14 L. Guo , D. P. Weygand

Beam polarization asymmetries for the p(gamma,K+)Lambda and p(gamma,K+)sigma0 reactions are measured for the first time for Egamma=1.5-2.4 GeV and 0.6<cos(theta_cm(K+))<1.0 by using linearly polarized photons at the Laser-Electron-Photon…

Background: Measurements of polarization observables for the reactions $\vec{\gamma} p \rightarrow K^+ \Lambda$ and $\vec{\gamma} p \rightarrow K^+ \Sigma^0$ have been performed. This is part of a programme of measurements designed to study…

Nuclear Experiment · Physics 2016-06-22 CLAS Collaboration , C. A. Paterson , D. G. Ireland , K. Livingston , B. McKinnon

We present measurements of the transverse momentum spectra for $\mathrm{K^{0}_{S}}$, $\Lambda$, $\Xi$ and their antiparticles in p+p collisions at $\sqrt{s}=200 GeV$. The extracted mid-rapidity yields and $<\mathrm{p_{T}}>$ are in agreement…

High Energy Physics - Experiment · Physics 2009-11-11 Mark Heinz

The first measurements of the transferred polarization for the exclusive ep --> e'K+ Lambda reaction have been performed in Hall B at the Thomas Jefferson National Accelerator Facility using the CLAS spectrometer. A 2.567 GeV electron beam…

High Energy Physics - Experiment · Physics 2010-04-06 CLAS Collaboration , D. S. Carman

We investigate the photoproduction of Lambda(1405,1/2^-) = Lambda* off the proton target using the effective Lagrangian in the Born approximation. We observed that, depending on the choice of the K* N Lambda* coupling strength, the total…

High Energy Physics - Phenomenology · Physics 2011-07-01 Seung-il Nam , Ji-Hyoung Park , Atsushi Hosaka , Hyun-Chul Kim

The reaction $\gamma p \rightarrow K^{+} \Lambda(1520)$ using photoproduction data from the CLAS $g12$ experiment at Jefferson Lab is studied. The decay of $\Lambda(1520)$ into two exclusive channels, $\Sigma^{+}\pi^{-}$ and…

High Energy Physics - Experiment · Physics 2021-03-03 U. Shrestha , T. Chetry , C. Djalali , K. Hicks , S. i. Nam , K. P. Adhikari , S. Adhikari , M. J. Amaryan , G. Angelini , H. Atac , L. Barion , M. Battaglieri , I. Bedlinskiy , F. Benmokhtar , A. Bianconi , A. S. Biselli , M. Bondi , F. Bossu , S. Boiarinov , W. J. Briscoe , W. K. Brooks , D. Bulumulla , V. D. Burkert , D. S. Carman , J. C. Carvajal , A. Celentano , P. Chatagnon , G. Ciullo , P. L. Cole , M. Contalbrigo , V. Crede , A. De Angelo , N. Dashyan , R. De Vita , M. Defurne , A. Deur , S. Diehl , M. Dugger , R. Dupre , H. Egiyan , M. Ehrhart , L. El Fassi , P. Eugenio , G. Fedotov , S. Fegan , A. Filippi , G. Gavalian , Y. Ghandilyan , G. P. Gilfoyle , F. X. Girod , D. I. Glazier , R. W. Gothe , K. A. Griffioen , M. Guidal , L. Guo , K. Hafidi , H. Hakobyan , M. Hattawy , T. B. Hayward , D. Heddle , M. Holtrop , Q. Huang , D. G. Ireland , E. L. Isupov , H. S. Jo , K. Joo , S. Joosten , D. Keller , A. Khanal , M. Khandaker , A. Kim , W. Kim , F. J. Klein , A. Kripko , V. Kubarovsky , L. Lanza , M. Leali , P. Lenisa , K. Livingston , I. J. D. MacGregor , D. Marchand , L. Marsicano , V. Mascagna , M. E. McCracken , B. McKinnon , V. Mokeev , A. Movsisyan , E. Munevar , C. Munoz Camacho , P. Nadel Turonski , 5 K. Neupane , S. Niccolai , G. Niculescu , T. O'Connell , M. Osipenko , A. I. Ostrovidov , L. L. Pappalardo , R. Paremuzyan , K. Park , E. Pasyuk , W. Phelps , N. Pivnyuk , O. Pogorelko , J. Poudel , Y. Prok , M. Ripani , J. Ritman , A. Rizzo , G. Rosner , J. Rowley , F. Sabatie , C. Salgado , A. Schmidt , R. A. Schumacher , Y. G. Sharabian , O. Soto , N. Sparveris , S. Stepanyan , I. I. Strakovsky , S. Strauch , N. Tyler , M. Ungaro , L. Venturelli , H. Voskanyan , E. Voutier , D. P. Watts , K. Wei , X. Wei , M. H. Wood , B. Yale , N. Zachariou , J. Zhang , Z. W. Zhao

The HERMES experiment has measured the transverse polarization of Lambda and Lambda-bar hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization of the Lambda hyperon is…

High Energy Physics - Experiment · Physics 2012-08-03 The HERMES Collaboration , A. Airapetian

We have measured inclusive data on $K^+$-meson production in $pp$ collisions at COSY J\"ulich close to the hyperon production threshold and determined the hyperon-nucleon invariant mass spectra. The spectra were decomposed into three parts:…

The PS185 experiment at LEAR/CERN has investigated strangeness production in antiproton-proton collisions with final states such as $\overline{\Lambda} \Lambda$, $\overline{\Sigma}^0 \Lambda + c.c$, $\overline{\Sigma^+} \Sigma^+$,…

We investigate the photoproduction of K*0Sigma+ and K*+Sigma0 off the proton target, employing the effective Lagrangian approach at the tree-level Born approximation. In addition to the (s, t, u)-channel Born diagrams, we take into account…

High Energy Physics - Phenomenology · Physics 2015-06-12 Sang-Ho Kim , Seung-il Nam , Atsushi Hosaka , Hyun-Chul Kim

At the electron-proton collider HERA the inclusive $D^{*\pm}$ meson photoproduction cross section has been measured with the H1 detector in two different, but partly overlapping, kinematical regions. For the first, where $<W_{\gamma p}>…

High Energy Physics - Experiment · Physics 2008-11-26 S. Aid

The recently published experimental data on K+Lambda photoproduction by the SAPHIR, CLAS, and LEPS collaborations are analyzed by means of a multipole approach. For this purpose the background amplitudes are constructed from appropriate…

Nuclear Theory · Physics 2008-11-26 T. Mart , A. Sulaksono

High-statistics measurements of differential cross sections and spin density matrix elements for the reaction $\gamma p \to \phi p$ have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies ($\sqrt{s}$) from…

Nuclear Experiment · Physics 2014-06-11 B. Dey , C. A. Meyer , M. Bellis , M Williams