Related papers: The proton structure function F2 with CLAS

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

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…

Nuclear Experiment · Physics 2021-03-03 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 , J. ~Zhang , Z. W. ~Zhao

Precision measurements of $g_1$ of the proton and the deuteron with 6 GeV electrons

The inclusive polarized structure functions of the proton and deuteron, g1p and g1d, were measured with high statistical precision using polarized 6 GeV electrons incident on a polarized ammonia target in Hall B at Jefferson Laboratory.…

Nuclear Experiment · Physics 2019-08-13 Y. Prok , P. Bosted , N. Kvaltine , K. P. Adhikari , D. Adikaram , M. Aghasyan , M. J. Amaryan , M. D. Anderson , S. Anefalos Pereira , H. Avakian , H. Baghdasaryan , J. Ball , N. A. Baltzell , M. Battaglieri , A. S. Biselli , J. Bono , W. J. Briscoe , J. Brock , W. K. Brooks , S. Bültmann , V. D. Burkert , C. Carlin , D. S. Carman , A. Celentano , S. Chandavar , L. Colaneri , P. L. Cole , M. Contalbrigo , O. Cortes , D. Crabb , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , G. E. Dodge , D. Doughty , R. Dupre , A. El Alaoui , L. El Fassi , L. Elouadrhiri , G. Fedotov , S. Fegan , R. Fersch , J. A. Fleming , T. A. Forest , M. Garcon , N. Gevorgyan , Y. Ghandilyan , G. P. Gilfoyle , F. X. Girod , K. L. Giovanetti , J. T. Goetz , W. Gohn , R. W. Gothe , K. A. Griffioen , B. Guegan , N. Guler , K. Haffidi , C. Hanretty , N. Harrison , M. Hattawy , K. Hicks , D. Ho , M. Holtrop , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , S. Jawalkar , X. Jiang , H. S. Jo , K. Joo , N. Kalantarians , C. Keith , D. Keller , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , S. Koirala , V. Kubarovsky , S. E. Kuhn , S. V. Kuleshov , P. Lenisa , K. Livingston , H. Y. Lu , I . J. D. MacGregor , N. Markov , M. Mayee , B. McKinnon , D. Meekins , T. Mineeva , M. Mirazita , V. Mokeev , R. A. Montgomery , H. Moutarde , A Movsisyan , 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 , P. Peng , J. J. Phillips , J. Pierce , S. Pisano , O. Pogorelko , S. Pozdniakov , J. W. Price , S. Procureur , D. Protopopescu , A. J. R. Puckett , B. A. Raue , D. Rimal , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , P. Roy , F. Sabatié , M. S. Saini , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , Y. G. Sharabian , A. Simonyan , C. Smith , G. Smith , D. I. Sober , D. Sokhan , S. S. Stepanyan , S. Stepanyan , I. I. Strakovsky , S. Strauch , V. Sytnik , M. Taiuti , W. Tang , S. Tkachenko , M. Ungaro , B . Vernarsky , A. V. Vlassov , H. Voskanyan , E. Voutier , N. K. Walford , D . P. Watts , L. B. Weinstein , N. Zachariou , L. Zana , J. Zhang , B. Zhao , Z. W. Zhao , I. Zonta

Hadronic Multi-Particle Final State Measurements with CLAS at Jefferson Lab

Precision measurements in the neutrino sector are becoming increasingly feasible due to the development of relatively high-rate experimental capabilities. These important developments command renewed attention to the systematic corrections…

Nuclear Experiment · Physics 2007-05-23 W. K. Brooks

Semi-inclusive pion electroproduction with CLAS

Measurement of the semi-inclusive pi+ electroproduction off the proton, performed with CLAS detector at Jefferson Lab, has been presented. The obtained fully-differential cross sections, including the azimuthal angle between hadronic and…

High Energy Physics - Experiment · Physics 2010-01-13 M. Osipenko

Readiness of the ATLAS Experiment for First Data

The ATLAS detector is one of the experiments at the LHC that will detect high-energy proton collisions at 14 TeV. The commissioning of the detector has started already in 2005 in parallel to the detector installation and is still in…

Instrumentation and Detectors · Physics 2019-08-13 Thilo Pauly

Probing the nucleon structure with CLAS

An overview of recent results with CLAS is presented with emphasis on nucleon resonance studies, nucleon spin structure, and generalized parton distributions.

Nuclear Experiment · Physics 2015-05-13 Volker D. Burkert

The proton and deuteron F_2 structure function at low Q^2

Measurements of the proton and deuteron $F_2$ structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range $0.06 < Q^2 < 2.8$ GeV$^2$, and Bjorken $x$ values from 0.009 to 0.45, thus…

Nuclear Experiment · Physics 2014-11-20 V. Tvaskis , J. Arrington , R. Asaturyan , O. K. Baker , H. P. Blok , P. Bosted , M. Boswell , A. Bruell , M. E. Christy , A. Cochran , R. Ent , B. W. Filippone , A. Gasparian , C. E. Keppel , E. Kinney , L. Lapikás , W. Lorenzon , D. J. Mack , J. Mammei , J. W. Martin , H. Mkrtchyan , I. Niculescu , R. B. Piercey , D. H. Potterveld , G. Smith , K. Spurlock , G. van der Steenhoven , S. Stepanyan , V. Tadevosian , S. A. Wood

ZEUS Results on the Measurement and Phenomenology of $F_2$ at Low x and Low Q^2

Measurements of the proton structure function $F_2$ for $0.6 < Q^2 < 17 {GeV}^2$ and $1.2 \times 10^{-5} < x <1.9 \times 10^{-3}$ from ZEUS 1995 shifted vertex data are presented. From ZEUS $F_2$ data the slopes $dF_2/d\ln Q^2$ at fixed $x$…

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

First Measurements of FL at Low Bjorken x

The first measurements of the longitudinal proton structure function FL in deep inelastic positron-proton scattering at low Bjorken x are described. Theoretical predictions in higher order QCD and using dipol model calculations are…

High Energy Physics - Experiment · Physics 2008-10-22 Max Klein

A Precise Measurement of the Neutron Magnetic Form Factor GMn in the Few-GeV2 Region

The neutron elastic magnetic form factor GMn has been extracted from quasielastic electron scattering data on deuterium with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The kinematic coverage of the measurement is…

Nuclear Experiment · Physics 2010-04-06 J. Lachniet , A. Afanasev , H. Arenhövel , W. K. Brooks , G. P. Gilfoyle , S. Jeschonnek , B. Quinn , M. F. Vineyard

Recent results on nucleon resonance electrocouplings from the studies of $\pi^{+}\pi^{-}p$ electroproduction with the CLAS detector

Recent results on nucleon resonance studies in $\pi^{+}\pi^{-}p$ electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing mechanisms, providing a…

High Energy Physics - Experiment · Physics 2015-05-13 V. I. Mokeev , V. D. Burkert , G. V. Fedotov , E. N. Golovach , B. S. Ishkhanov

On the Asymptotic Behaviour of F_2(x,Q^2)

We discuss how the proton structure function F2 is described in the HERA kinematic range by double asymptotic expressions for low x and large Q^2. From a NLO double asymptotic approximation of recent data from the H1 experiment at HERA we…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. DeRoeck , M. Klein , Th. Naumann

The Strangeness Physics Program at CLAS

An extensive program of strange particle production off the proton is currently underway with the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at Jefferson Laboratory. This talk will emphasize strangeness photo- and…

High Energy Physics - Experiment · Physics 2017-08-23 D. S. Carman

Experimental and Physics Prospects at ATLAS and CMS - 2011 and Beyond

The ATLAS and CMS experiments have collected data at the CERN Large Hadron Collider (LHC) since December 2009, and with a collision energy \sprts=7 TeV since March 2010. Both detectors work remarkably well at this early stage of operation,…

High Energy Physics - Experiment · Physics 2010-12-08 Allan G. Clark

Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data

Many of the interesting physics processes to be measured at the LHC have a signature involving one or more isolated electrons. The electron reconstruction and identification efficiencies of the ATLAS detector at the LHC have been evaluated…

High Energy Physics - Experiment · Physics 2014-07-23 ATLAS Collaboration

A high-Q^2 measurement of the photon structure function F_2^gamma at LEP2

The photon structure function F_2^gamma has been measured at <Q^2> of 706 GeV^2, using a sample of two-photon events with a scattered electron observed in the OPAL electromagnetic endcap calorimeter. The data were taken during the years…

High Energy Physics - Experiment · Physics 2011-07-19 R. J. Taylor

Recent constraints on the parton distributions in the proton and the measurement of $\alpha_S$ from ATLAS and CMS

Recent results on cross sections sensitive to the parton distribution functions (PDFs) within the proton from the ATLAS and CMS Collaborations are presented. The potential impact on the inclusion of these data in fits to the PDFs is…

High Energy Physics - Experiment · Physics 2014-06-09 Mark Sutton

Importance of a Measurement of F_L(x,Q^2) at HERA

I investigate what a direct measurement of the longitudinal structure function F_L(x,Q^2) could teach us about the structure of the proton and the best way in which to use perturbative QCD for structure functions. I assume HERA running at a…

High Energy Physics - Phenomenology · Physics 2017-08-23 R. S. Thorne

The ATLASpdf21 fit: a novel determination of proton Parton Distribution Functions using ATLAS data

We present fits to determine Parton Distribution Functions using a diverse set of measurements from the ATLAS experiment at the LHC, including inclusive $W$ and $Z$ boson production, $t\bar{t}$ production, $W$+jets and $Z$+jets production,…

High Energy Physics - Experiment · Physics 2022-07-04 Francesco Giuli

Longitudinal Structure Function Measurements from HERA

Measurements of the longitudinal structure function FL at the ep collider HERA are presented. They are derived from inclusive deep inelastic neutral current e+p scattering cross section measurements based on data collected in 2007 with the…

High Energy Physics - Experiment · Physics 2008-10-29 Vladimir Chekelian