Related papers: First Results from The GlueX Experiment

Prospects for Measuring $\Delta g$ from Jets at HERA with Polarized Protons

The measurement of the polarized gluon distribution function $\Delta g(x)$ from photon gluon fusion processes in electron proton deep inelastic scattering producing two jets has been investigated. The study is based on the MEPJET simulation…

High Energy Physics - Phenomenology · Physics 2009-10-28 J. Feltesse , F. Kunne , E. Mirkes

Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab: an update on PR12-16-001

This document is an update to the proposal PR12-16-001 Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab submitted to JLab-PAC44 in 2016 reporting progress in addressing questions raised regarding the beam-on backgrounds.…

Instrumentation and Detectors · Physics 2018-01-09 M. Battaglieri , A. Bersani , G. Bracco , B. Caiffi , A. Celentano , R. De Vita , L. Marsicano , P. Musico , M. Osipenko , F. Panza , M. Ripani , E. Santopinto , M. Taiuti , V. Bellini , M. Bondi' , P. Castorina , M. De Napoli , A. Italiano , V. Kuznetzov , E. Leonora , F. Mammoliti , N. Randazzo , L. Re , G. Russo , M. Russo , A. Shahinyan , M. Sperduto , S. Spinali , C. Sutera , F. Tortorici , N. Baltzell , M. Dalton , A. Freyberger , F. -X. Girod , G. Kharashvili , V. Kubarovsky , E. Pasyuk , E. S. Smith , S. Stepanyan , M. Ungaro , T. Whitlatch , E. Izaguirre , G. Krnjaic , D. Snowden-Ifft , D. Loomba , M. Carpinelli , D. D'Urso , A. Gabrieli , G. Maccioni , M. Sant , V. Sipala , F. Ameli , E. Cisbani , F. De Persio , A. Del Dotto , F. Garibaldi , F. Meddi , C. A. Nicolau , G. M. Urciuoli , T. Chiarusi , M. Manzali , C. Pellegrino , P. Schuster , N. Toro , R. Essig , M. H. Wood , M. Holtrop. R. Paremuzyan , G. De Cataldo , R. De Leo , D. Di Bari , L. Lagamba , E. Nappi , R. Perrino , I. Balossino , L. Barion , G. Ciullo , M. Contalbrigo , A. Drago , P. Lenisa , A. Movsisyan , L. Pappalardo , F. Spizzo , M. Turisini , D. Hasch , V. Lucherini , M. Mirazita , S. Pisano , P. Rossi , S. Tomassini , G. Simi , A. D'Angelo , L. Lanza , A. Rizzo , C. Schaerf , I. Zonta , A. Filippi , M. Genovese , S. Fegan , M. Kunkel , M. Bashkanov , A. Murphy , G. Smith , D. Watts , N. Zachariou , L. Zana , D. Glazier , D. Ireland , B. McKinnon , D. Sokhan , L. Colaneri , S. Anefalos Pereira , A. Afanasev , B. Briscoe , I. Strakovsky , N. Kalantarians , L. Weinstein , K. P. Adhikari , J. A. Dunne , D. Dutta , L. El Fassi , L. Ye , K. Hicks , P. Cole , S. Dobbs , C. Fanelli , P. T. M. Murthy

First Measurement of Near- and Sub-Threshold $J/\psi$ Photoproduction off Nuclei

We report on the first measurement of $J/\psi$ photoproduction from nuclei in the photon energy range of $7$ to $10.8$ GeV, extending above and below the photoproduction threshold in the free proton of $\sim8.2$ GeV. The experiment used a…

Nuclear Experiment · Physics 2025-05-26 J. R. Pybus , L. Ehinger , T. Kolar , B. Devkota , P. Sharp , B. Yu , M. M. Dalton , D. Dutta , H. Gao , O. Hen , E. Piasetzky , S. N. Santiesteban , A. Schmidt , A. Somov , H. Szumila-Vance , S. Adhikari , A. Asaturyan , A. Austregesilo , C. Ayerbe Gayoso , J. Barlow , V. V. Berdnikov , H. D. Bhatt , Deepak Bhetuwal , T. Black , W. J. Briscoe , G. Chung , P. L. Cole , A. Deur , R. Dotel , H. Egiyan , P. Eugenio , C. Fanelli , L. Gan , A. Gasparian , J. Guo , K. Hernandez , D. W. Higinbotham , P. Hurck , I. Jaegle , R. T. Jones , V. Kakoyan , A. Karki , H. Li , W. B. Li , G. R. Linera , V. Lyubovitskij , H. Marukyan , M. D. McCaughan , M. McCracken , K. Mizutani , D. Nguyen , S. Oresic , A. I. Ostrovidov , Z. Papandreou , C. Paudel , K. Peters , J. Ritman , A. Schick , J. Schwiening , A. Smith , S. Somov , I. Strakovsky , K. Suresh , V. V. Tarasov , S. Taylor , T. Xiao , Z. Zhang , X. Zhou

$\gamma\gamma$ physics with the KLOE experiment

The processes $e^+e^-\to e^+e^-X$, with $X$ being either the $\eta$ meson or $\pi^0\pi^0$, are studied at DA$\Phi$NE, with $e^+e^-$ beams colliding at $\sqrt{s}\simeq1$ GeV, below the $\phi$ resonance peak. The data sample is from an…

High Energy Physics - Experiment · Physics 2011-07-20 2 Collaboration , F. Archilli , D. Babusci , D. Badoni , I. Balwierz , G. Bencivenni , C. Bini , C. Bloise , V. Bocci , F. Bossi , P. Branchini , A. Budano , S. A. Bulychjev , P. Campana , G. Capon , F. Ceradini , P. Ciambrone , E. Czerwinski , E. Dane , E. De Lucia , G. De Robertis , A. De Santis , G. De Zorzi , A. Di Domenico , C. Di Donato , D. Domenici , O. Erriquez , G. Fanizzi , G. Felici , S. Fiore , P. Franzini , P. Gauzzi , S. Giovannella , F. Gonnella , E. Graziani , F. Happacher , B. Hoistad , E. Iarocci , M. Jacewicz , T. Johansson , V. Kulikov , A. Kupsc , J. Lee-Franzini , F. Loddo , M. Martemianov , M. Martini , M. Matsyuk , R. Messi , S. Miscetti , G. Morello , D. Moricciani , P. Moskal , F. Nguyen , A. Passeri , V. Patera , I. Prado Longhi , A. Ranieri , P. Santangelo , I. Sarra , M. Schioppa , B. Sciascia , A. Sciubba , M. Silarski , C. Taccini , L. Tortora , G. Venanzoni , R. Versaci , W. Wislicki , M. Wolke , J. Zdebik

First demonstration of gamma-ray imaging using balloon-borne emulsion telescope

We promote the precise gamma-ray observation project Gamma-Ray Astro-Imager with Nuclear Emulsion (GRAINE), which uses balloon-borne emulsion gamma-ray telescopes. The emulsion telescope realizes observations with high angular resolution,…

Instrumentation and Methods for Astrophysics · Physics 2018-04-24 Hiroki Rokujo , Shigeki Aoki , Kaname Hamada , Toshio Hara , Tatsuki Inoue , Katsumi Ishiguro , Atsushi Iyono , Hiroaki Kawahara , Koichi Kodama , Ryosuke Komatani , Masahiro Komatsu , Tetsuya Kosaka , Fukashi Mizutani , Motoaki Miyanishi , Kunihiro Morishima , Misaki Morishita , Mitsuhiro Nakamura , Toshiyuki Nakano , Akira Nishio , Kimio Niwa , Naoto Otsuka , Keita Ozaki , Osamu Sato , Emi Shibayama , Satoru Takahashi , Atsumu Suzuki , Ryo Tanaka , Yurie Tateishi , Shuichi Tawa , Misato Yabu , Kyohei Yamada , Saya Yamamoto , Masahiro Yoshimoto

Production of highly-polarized positrons using polarized electrons at MeV energies

The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient transfer of polarization from electrons to positrons produced…

Accelerator Physics · Physics 2016-07-06 D. Abbott , P. Adderley , A. Adeyemi , P. Aguilera , M. Ali , H. Areti , M. Baylac , J. Benesch , G. Bosson , B. Cade , A. Camsonne , L. S. Cardman , J. Clark , P. Cole , S. Covert , C. Cuevas , O. Dadoun , D. Dale , H. Dong , J. Dumas , E. Fanchini , T. Forest , E. Forman , A. Freyberger , E. Froidefond , S. Golge , J. Grames , P. Guèye , J. Hansknecht , P. Harrell , J. Hoskins , C. Hyde , B. Josey , R. Kazimi , Y. Kim , D. Machie , K. Mahoney , R. Mammei , M. Marton , J. McCarter , M. McCaughan , M. McHugh , D. McNulty , K. E. Mesick , T. Michaelides , R. Michaels , B. Moffit , D. Moser , C. Muñoz Camacho , J. -F. Muraz , A. Opper , M. Poelker , J. -S. Réal , L. Richardson , S. Setiniyaz , M. Stutzman , R. Suleiman , C. Tennant , C. Tsai , D. Turner , M. Ungaro , A. Variola , E. Voutier , Y. Wang , Y. Zhang

Scalar photoproduction on the proton at CLAS and GlueX energies

In this work we present the results of a theoretical analysis of the data on photoproduction of $f_0(980)$ meson in the laboratory photon energy between $3.0$ GeV and $3.8$ GeV. A comparison is done to the measurements performed by the CLAS…

High Energy Physics - Phenomenology · Physics 2014-04-18 M. L. L. da Silva , M. V. T. Machado

The Use of Laterally Graded Multilayer Mirrors for Soft X-ray Polarimetry

We present continued development of laterally graded multilayer mirrors (LGMLs) for a telescope design capable of measuring linear X-ray polarization over a broad spectral band. The multilayer-coated mirrors are used as Bragg reflectors at…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Herman L. Marshall , Norbert S. Schulz , David L. Windt , Eric M. Gullikson , Eric Blake , Dan Getty , Zane McInturff

First measurement of the helicity asymmetry $E$ in $\eta$ photoproduction on the proton

Results are presented for the first measurement of the double-polarization helicity asymmetry E for the $\eta$ photoproduction reaction $\gamma p \rightarrow \eta p$. Data were obtained using the FROzen Spin Target (FROST) with the CLAS…

Nuclear Experiment · Physics 2016-01-27 I. Senderovich , B. T. Morrison , M. Dugger , B. G. Ritchie , E. Pasyuk , R. Tucker , J. Brock , C. Carlin , C. D. Keith , D. G. Meekins , M. L. Seely , D. R , M. D , P. Collins , K. P. Adhikari , D. Adikaram , Z. Akbar , M. D. Anderson , S. Anefalos Pereira , R. A. Badui , J. Ball , N. A. Baltzell , M. Battaglieri , V. Batourine , I. Bedlinskiy , A. S. Biselli , S. Boiarinov , W. J. Briscoe , W. K. Brooks , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , L. Colaneri , P. L. Cole , M. Contalbrigo , O. Cortes , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , A. Fradi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , A. Filippi , J. A. Fleming , B. Garillon , Y. Ghandilyan , G. P. Gilfoyle , K. L. Giovanetti , F. -X. Girod , D. I. Glazier , J. T. Goetz , W. Gohn , E. Golovatch , R. W. Gothe , K. A. Griffioen , M. Guidal , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , M. Hattawy , K. Hicks , D. Ho , M. Holtrop , S. M. Hughes , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , D. Jenkins , H. Jiang , H. S. Jo , K. Joo , S. Joosten , D. Keller , G. Khachatryan , M. Khandaker , A. Kim , F. J. Klein , V. Kubarovsky , M. C. Kunkel , P. Lenisa , K. Livingston , H. Y. Lu , I. J. D. MacGregor , P. Mattione , B. McKinnon , C. A. Meyer , T. Mineeva , V. Mokeev , R. A. Montgomery , A. Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , L. A. Net , S. Niccolai , G. Niculescu , I. Niculescu , M. Osipenko , K. Park , S. Park , P. Peng , W. Phelps , S. Pisano , O. Pogorelko , J. W. Price , Y. Prok , A. J. R. Puckett , M. Ripani , A. Rizzo , G. Rosner , P. Roy , F. Sabatie , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , A. Simonyan , Iu. Skorodumina , G. D. Smith , D. I. Sober , D. Sokhan , N. Sparveris , S. Stepanyan , P. Stoler , I. I. Strakovsky , S. Strauch , V. Sytnik , Ye Tian , M. Ungaro , H. Voskanyan , E. Voutier , N. K. Walford , X. Wei , M. H. Wood , N. Zachariou , L. Zana , J. Zhang , Z. W. Zhao , I. Zonta

Summary of One Year Operation of the EUDET CMOS Pixel Telescope

Within the EUDET consortium a high resolution pixel beam telescope is being developed. The telescope consists of up to six planes of monolithic active pixel sensors. A flexible data acquisition environment is available for the telescope and…

Instrumentation and Detectors · Physics 2009-01-07 Ingrid-Maria Gregor

First constraint for atmospheric millicharged particles with the LUX-ZEPLIN experiment

We report on a search for millicharged particles (mCPs) produced in cosmic ray proton atmospheric interactions using data collected during the first science run of the LUX-ZEPLIN experiment. The mCPs produced by two processes -- meson decay…

High Energy Physics - Experiment · Physics 2025-06-19 J. Aalbers , D. S. Akerib , A. K. Al Musalhi , F. Alder , C. S. Amarasinghe , A. Ames , T. J. Anderson , N. Angelides , H. M. Araújo , J. E. Armstrong , M. Arthurs , A. Baker , S. Balashov , J. Bang , J. W. Bargemann , E. E. Barillier , D. Bauer , K. Beattie , T. Benson , A. Bhatti , A. Biekert , T. P. Biesiadzinski , H. J. Birch , E. Bishop , G. M. Blockinger , B. Boxer , C. A. J. Brew , P. Brás , S. Burdin , M. Buuck , M. C. Carmona-Benitez , M. Carter , A. Chawla , H. Chen , J. J. Cherwinka , Y. T. Chin , N. I. Chott , M. V. Converse , R. Coronel , A. Cottle , G. Cox , D. Curran , C. E. Dahl , I. Darlington , S. Dave , A. David , J. Delgaudio , S. Dey , L. de Viveiros , L. Di Felice , C. Ding , J. E. Y. Dobson , E. Druszkiewicz , S. Dubey , S. R. Eriksen , A. Fan , S. Fayer , N. M. Fearon , N. Fieldhouse , S. Fiorucci , H. Flaecher , E. D. Fraser , T. M. A. Fruth , R. J. Gaitskell , A. Geffre , J. Genovesi , C. Ghag , A. Ghosh , R. Gibbons , S. Gokhale , J. Green , M. G. D. van der Grinten , J. J. Haiston , C. R. Hall , T. J. Hall , S. Han , E. Hartigan-O'Connor , S. J. Haselschwardt , M. A. Hernandez , S. A. Hertel , G. Heuermann , G. J. Homenides , M. Horn , D. Q. Huang , D. Hunt , E. Jacquet , R. S. James , J. Johnson , A. C. Kaboth , A. C. Kamaha , Meghna K. K. , D. Khaitan , A. Khazov , I. Khurana , J. Kim , Y. D. Kim , J. Kingston , R. Kirk , D. Kodroff , L. Korley , E. V. Korolkova , H. Kraus , S. Kravitz , L. Kreczko , V. A. Kudryavtsev , C. Lawes , D. S. Leonard , K. T. Lesko , C. Levy , J. Lin , A. Lindote , W. H. Lippincott , M. I. Lopes , W. Lorenzon , C. Lu , S. Luitz , P. A. Majewski , A. Manalaysay , R. L. Mannino , C. Maupin , M. E. McCarthy , G. McDowell , D. N. McKinsey , J. McLaughlin , J. B. McLaughlin , R. McMonigle , E. Mizrachi , A. Monte , M. E. Monzani , J. D. Morales Mendoza , E. Morrison , B. J. Mount , M. Murdy , A. St. J. Murphy , A. Naylor , H. N. Nelson , F. Neves , A. Nguyen , C. L. O'Brien , I. Olcina , K. C. Oliver-Mallory , J. Orpwood , K. Y Oyulmaz , K. J. Palladino , J. Palmer , N. J. Pannifer , N. Parveen , S. J. Patton , B. Penning , G. Pereira , E. Perry , T. Pershing , A. Piepke , Y. Qie , J. Reichenbacher , C. A. Rhyne , A. Richards , Q. Riffard , G. R. C. Rischbieter , E. Ritchey , H. S. Riyat , R. Rosero , T. Rushton , D. Rynders , D. Santone , A. B. M. R. Sazzad , R. W. Schnee , G. Sehr , B. Shafer , S. Shaw , T. Shutt , J. J. Silk , C. Silva , G. Sinev , J. Siniscalco , R. Smith , V. N. Solovov , P. Sorensen , J. Soria , I. Stancu , A. Stevens , K. Stifter , B. Suerfu , T. J. Sumner , M. Szydagis , D. R. Tiedt , M. Timalsina , Z. Tong , D. R. Tovey , J. Tranter , M. Trask , M. Tripathi , A. Usón , A. Vacheret , A. C. Vaitkus , O. Valentino , V. Velan , A. Wang , J. J. Wang , Y. Wang , J. R. Watson , L. Weeldreyer , T. J. Whitis , K. Wild , M. Williams , W. J. Wisniewski , L. Wolf , F. L. H. Wolfs , S. Woodford , D. Woodward , C. J. Wright , Q. Xia , J. Xu , Y. Xu , M. Yeh , D. Yeum , W. Zha , E. A. Zweig

Direct Experimental Observation of the Gas Filamentation Effect using a Two-bunch X-ray FEL Beam

We report the experimental observation of the filamentation effect in gas devices designed for X-ray Free-electron Lasers. The measurements were carried out at the Linac Coherent Light Source on the X-ray Correlation Spectroscopy (XCS)…

Applied Physics · Physics 2017-06-09 Y. Feng , D. W. Schafer , S. Song , Y. Sun , D. Zhu , J. Krzywinski , A. Robert , J. Wu , F. -J. Decker

Topical Results on Vector-Meson Production from the HERA Collider Experiments

The HERA collider experiments H1 and ZEUS have established extensive measurement programs for diffractive vector-meson production processes during the first six years of their operation. The results provide stringent phenomenological tests…

High Energy Physics - Experiment · Physics 2007-05-23 J. A. Crittenden

In-situ single-shot diffractive fluence mapping for X-ray free-electron laser pulses

Free-electron lasers (FEL) in the extreme ultraviolet (XUV) and X-ray regime opened up the possibility for experiments at high power densities, in particular allowing for fluence-dependent absorption and scattering experiments to reveal…

Instrumentation and Detectors · Physics 2018-02-07 Michael Schneider , Christian M. Günther , Bastian Pfau , Flavio Capotondi , Michele Manfredda , Marco Zangrando , Nicola Mahne , Lorenzo Raimondi , Emanuele Pedersoli , Stefan Eisebitt

Measurement of polarization observables in omega-photoproduction

Near threshold omega meson photoproduction is studied with the CBELSA/TAPS experiment at the ELSA accelerator of Bonn University. Single as well as double polarization observables are measured using either linear or circular polarized…

Nuclear Experiment · Physics 2019-08-14 Holger Eberhardt

Experimental demonstration of Luneburg waveguides

Transformation optics gives rise to numerous unusual optical devices, such as novel metamaterial lenses and invisibility cloaks. Very recently Mattheakis et al. have suggested theoretical design of an optical waveguide based on a network of…

Optics · Physics 2015-04-21 Vera N. Smolyaninova , David Lahneman , Todd Adams , Thomas Gresock , Kathryn Zander , Christopher Jensen , Igor I. Smolyaninov

Low energy polarization sensitivity of the Gas Pixel Detector

An X-ray photoelectric polarimeter based on the Gas Pixel Detector has been proposed to be included in many upcoming space missions to fill the gap of about 30 years from the first (and to date only) positive measurement of polarized X-ray…

Astrophysics · Physics 2008-11-26 F. Muleri , P. Soffitta , L. Baldini , R. Bellazzini , J. Bregeon , A. Brez , E. Costa , M. Frutti , L. Latronico , M. Minuti , M. B. Negri , N. Omodei , M. Pinchera , M. Pesce-Rollins , M. Razzano , A. Rubini , C. Sgro' , G. Spandre

Experimental characterisation of a single-shot spectrometer for high-flux, GeV-scale gamma-ray beams

We report on the first experimental characterisation of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in the GeV range. The spectrometer has been experimentally characterised using a…

Instrumentation and Detectors · Physics 2024-02-29 N. Cavanagh , K. Fleck , M. J. V. Streeter , E. Gerstmayr , L. T. Dickson , C. Ballage , R. Cadas , L. Calvin , S. Dobosz Dufrénoy , I. Moulanier , L. Romagnani , O. Vasilovici , A. Whitehead , A. Specka , B. Cros , G. Sarri

Search for solar axions: the CAST experiment at CERN

Hypothetical axion-like particles with a two-photon interaction would be produced in the sun by the Primakoff process. In a laboratory magnetic field they would be transformed into X-rays with energies of a few keV. The CAST experiment at…

High Energy Physics - Experiment · Physics 2019-08-14 Berta Beltran

The DarkLight Experiment: A Precision Search for New Physics at Low Energies

We describe the current status of the DarkLight experiment at Jefferson Laboratory. DarkLight is motivated by the possibility that a dark photon in the mass range 10 to 100 MeV/c$^2$ could couple the dark sector to the Standard Model.…

Instrumentation and Detectors · Physics 2014-12-16 J. Balewski , J. Bernauer , J. Bessuille , R. Corliss , R. Cowan , C. Epstein , P. Fisher , D. Hasell , E. Ihloff , Y. Kahn , J. Kelsey , R. Milner , S. Steadman , J. Thaler , C. Tschalaer , C. Vidal , S. Benson , J. Boyce , D. Douglas , P. Evtushenko , C. Hernandez-Garcia , C. Keith , C. Tennant , S. Zhang , R. Alarcon , D. Blyth , R. Dipert , L. Ice , G. Randall , B. Dongwi , N. Kalantarians , M. Kohl , A. Liyanage , J. Nazeer , M. Garcon , R. Cervantes , K. Dehmelt , A. Deshpande , N. Feege , B. Surrow