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First measurements of double-polarization observables in $\omega$ photoproduction off the proton are presented using transverse target polarization and data from the CEBAF Large Acceptance Spectrometer (CLAS) FROST experiment at Jefferson…

Nuclear Experiment · Physics 2019-05-02 P. Roy , S. Park , V. Crede , A. V. Anisovich , E. Klempt , V. A. Nikonov , A. V. Sarantsev , N. C. Wei , F. Huang , K. Nakayama , K. P. Adhikari , S. Adhikari , G. Angelini , H. Avakian , L. Barion , M. Battaglieri , I. Bedlinskiy , A. S. Biselli , S. Boiarinov , W. J. Briscoe , J. Brock , W. K. Brooks , V. D. Burkert , F. Cao , C. Carlin , D. S. Carman , A. Celentano , P. Chatagnon , T. Chetry , G. Ciullo , P. L. Cole , M. Contalbrigo , O. Cortes , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , S. Diehl , C. Djalali , M. Dugger , R. Dupre , B. Duran , H. Egiyan , M. Ehrhart , A. El Alaoui , L. El Fassi , P. Eugenio , S. Fegan , A. Filippi , A. Fradi , G. P. Gilfoyle , F. X. Girod , E. Golovatch , R. W. Gothe , K. A. Griffioen , M. Guidal , L. Guo , K. Hafidi , C. Hanretty , N. Harrison , M. Hattawy , T. B. Hayward , D. Heddle , K. Hicks , M. Holtrop , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , D. Jenkins , H. S. Jo , S. Johnston , S. Joosten , M. L. Kabir , C. D. Keith , D. Keller , G. Khachatryan , M. Khachatryan , A. Khanal , M. Khandaker , A. Kim , W. Kim , F. J. Klein , V. Kubarovsky , S. V. Kuleshov , M. C. Kunkel , L. Lanza , P. Lenisa , K. Livingston , I. J. D. MacGregor , D. Marchand , B. McKinnon , D. G. Meekins , C. A. Meyer , T. Mineeva , V. Mokeev , R. A. Montgomery , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , S. Niccolai , G. Niculescu , M. Osipenko , A. I. Ostrovidov , M. Paolone , L. L. Pappalardo , R. Paremuzyan , E. Pasyuk , D. Payette , W. Phelps , J. Pierce , O. Pogorelko , Y. Prok , D. Protopopescu , B. A. Raue , M. Ripani , D. Riser , B. G. Ritchie , A. Rizzo , G. Rosner , F. Sabatie , C. Salgado , R. A. Schumacher , M. L. Seely , Y. G. Sharabian , U. Shrestha , Iu. Skorodumina , D. Sokhan , O. Soto , N. Sparveris , I. I. Strakovsky , S. Strauch , M. Taiuti , J. A. Tan , B. Torayev , N. Tyler , M. Ungaro , H. Voskanyan , E. Voutier , N. K. Walford , R. Wang , D. P. Watts , X. Wei , M. H. Wood , N. Zachariou , J. Zhang , Z. W. Zhao

Investigating batteries while they operate allows researchers to track the inner electrochemical processes involved in working conditions. This study describes the first neutron radiography investigation of a lead-acid battery. A…

A new tagged photon beam facility is being constructed in experimental Hall-D at Jefferson Lab as a part of the 12 GeV upgrade program. The 9 GeV linearly-polarized photon beam will be produced via coherent Bremsstrahlung using the CEBAF…

Nuclear Experiment · Physics 2014-07-09 Justin R. Stevens

The photoproduction process of neutral kaons on a liquid deuterium target is investigated near the threshold region, Egamma = 0.8-1.1 GeV. K0 events are reconstructed from positive and negative pions, and differential cross sections are…

We discuss in detail the formation and propagation of multi-strangeness particles in reactions induced by hadron beams relevant for the forthcoming experiments at FAIR. We focus the discussion on the production of the decuplet-particle…

Nuclear Theory · Physics 2016-04-18 T. Gaitanos , Ch. C. Moustakidis , G. A. Lalazissis , H. Lenske

Differential cross sections of the reaction gamma d to K+ Sigma- (p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness…

Nuclear Experiment · Physics 2019-08-13 S. Anefalos Pereira , M. Mirazita , P. Rossi , E. De Sanctis , G. Niculescu , I. Niculescu , S. Stepanyan

The search for dark matter weakly interacting massive particles with noble liquids has probed masses down and below a GeV/c^2. The ultimate limit is represented by the experimental threshold on the energy transfer to the nuclear recoil.…

High Energy Physics - Phenomenology · Physics 2020-11-11 Giovanni Grilli di Cortona , Andrea Messina , Stefano Piacentini

Despite decades of studies of the photoproduction of hyperons, both their production mechanisms and their spectra of excited states are still largely unknown. While the parity-violating weak decay of hyperons offers a means of measuring…

Nuclear Experiment · Physics 2018-07-11 J. Bono , L. Guo. , B. Raue

Positrons beam dump experiments have unique features to search for very narrow resonances coupled superweakly to $e^+ e^-$ pairs. Due to the continue loss of energy from soft photon bremsstrahlung, in the first few radiation lengths of the…

High Energy Physics - Phenomenology · Physics 2018-05-09 Enrico Nardi , Cristian D. R. Carvajal , Anish Ghoshal , Davide Meloni , Mauro Raggi

The Dark Matter Particle Explorer (DAMPE) is a satellite-borne detector designed to measure high energy cosmic-rays and $\gamma$-rays. As a key sub-detector of DAMPE, the Bismuth Germanium Oxide (BGO) imaging calorimeter is utilized to…

High Energy Physics - Experiment · Physics 2023-08-09 Zhan-Fang Chen , Chuan Yue , Wei Jiang , Ming-Yang Cui , Qiang Yuan , Ying Wang , Cong Zhao , Yi-Feng Wei

Photoproduction of pi0 mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300 MeV to 3 GeV. Differential cross sections d sigma /d Omega, d sigma/d t, and the total cross section are presented. For…

Nuclear Experiment · Physics 2019-08-14 H. van Pee , O. Bartholomy , V. Crede

We study the strangeness production in hot and dense nuclear medium, by requiring the conservation of the baryon density, electric charge fraction and zero net strangeness. The hadronic equation of state is investigated by means of an…

Nuclear Theory · Physics 2012-10-02 F. Iazzi , R. Introzzi , A. Lavagno , D. Pigato , M. H. Younis

Data on mean numbers of $\Lambda$, $\bar\Lambda$, K's and on the total number $<s\bar s>$ of pairs of strange valence quarks in final state hadrons in hadronic and nuclear collisions at CERN- SPS energies are studied as a function of the…

High Energy Physics - Phenomenology · Physics 2011-09-13 Roman Lietava , Jan Pisut

The Hermes experiment studies the spin structure of the nucleon using the 27.6 GeV longitudinally polarized positron beam of HERA and an internal target of pure gases. In addition to the well-known spin structure function g_1, measured…

High Energy Physics - Experiment · Physics 2019-08-15 Marco Contalbrigo

The theoretical and experimental aspects of particle production from the strong equivalent photon fluxes present at high energy hadron colliders are reviewed. The goal is to show how photons at hadron colliders can improve what we have…

High Energy Physics - Phenomenology · Physics 2010-01-27 Joakim Nystrand

In this work we investigate the photoproduction of massive gauge bosons, $W^{\pm}$ and $Z^0$, as part of relevant physics topics to be studied in the proposed electron-proton collider, the LHeC. The estimates for production cross sections…

High Energy Physics - Phenomenology · Physics 2012-08-29 C. Brenner Mariotto , M. V. T. Machado

We show that bottom-strange production at a high-energy muon collider, $\mu^+ \mu^- \to b s$, is a sensitive probe of new physics. We consider the full set of four-fermion contact interactions that contribute to this process at dimension 6,…

High Energy Physics - Phenomenology · Physics 2023-06-28 Wolfgang Altmannshofer , Sri Aditya Gadam , Stefano Profumo

In this work, the $\eta^\prime$ meson photoproduction near threshold is studied in the quark model framework. A pseudovector effective Lagrangian is introduced for the $\eta^\prime NN$ coupling and the newly published data from the SAPHIR…

Nuclear Theory · Physics 2009-11-06 Q. Zhao

In order to understand strangeness production mechanisms, one can study the correlations of hadrons with hidden strangeness (e.g. the $\phi$ meson) and open strangeness ($\mathrm{K}^{0}_{\mathrm{S}}$, $\Lambda$ and $\bar{\Lambda}$) in hard…

Nuclear Experiment · Physics 2020-09-16 Justin Blair

We discuss the eta and eta prime photo- and electroproduction as a way to probe the nucleon resonance structure.

High Energy Physics - Phenomenology · Physics 2011-04-20 Nimai C. Mukhopadhyay , J. -F. Zhang , M. Benmerrouche