Skip to Main content Skip to Navigation
Journal articles

Measurement of the diffractive longitudinal structure function F(L)(D) at HERA

F.D. Aaron C. Alexa V. Andreev S. Backovic A. Baghdasaryan S. Baghdasaryan E. Barrelet 1 W. Bartel K. Begzsuren A. Belousov P. Belov J.C. Bizot 2 V. Boudry 3 I. Bozovic-Jelisavcic J. Bracinik G. Brandt M. Brinkmann V. Brisson 2 D. Britzger D. Bruncko A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell K.B. Cantun Avila F. Ceccopieri K. Cerny V. Cerny V. Chekelian J.G. Contreras J.A. Coughlan J. Cvach J.B. Dainton K. Daum B. Delcourt 2 J. Delvax E.A. de Wolf C. Diaconu 4 M. Dobre V. Dodonov A. Dossanov A. Dubak G. Eckerlin S. Egli A. Eliseev E. Elsen L. Favart A. Fedotov R. Felst J. Feltesse J. Ferencei D.-J. Fischer M. Fleischer A. Fomenko E. Gabathuler J. Gayler S. Ghazaryan A. Glazov L. Goerlich N. Gogitidze M. Gouzevitch 3 C. Grab A. Grebenyuk T. Greenshaw B.R. Grell G. Grindhammer S. Habib D. Haidt C. Helebrant R.C.W. Henderson E. Hennekemper H. Henschel M. Herbst G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann 4 R. Horisberger T. Hreus F. Huber M. Jacquet 2 X. Janssen L. Jönsson H. Jung M. Kapichine I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Kluge R. Kogler P. Kostka M. Kraemer J. Kretzschmar K. Krüger M.P.J. Landon W. Lange G. Lastovicka-Medin P. Laycock A. Lebedev V. Lendermann S. Levonian 3 K. Lipka B. List J. List R. Lopez-Fernandez V. Lubimov A. Makankine E. Malinovski P. Marage H.-U. Martyn S.J. Maxfield A. Mehta A.B. Meyer H. Meyer J. Meyer S. Mikocki I. Milcewicz-Mika F. Moreau 3 A. Morozov J.V. Morris M. Mudrinic K. Müller Th. Naumann P.R. Newman C. Niebuhr D. Nikitin G. Nowak K. Nowak J.E. Olsson D. Ozerov P. Pahl V. Palichik I. Panagouliasl M. Pandurovic Th. Papadopouloul C. Pascaud 2 G.D. Patel E. Perez A. Petrukhin I. Picuric S. Piec H. Pirumov D. Pitzl R. Placakyte B. Pokorny R. Polifka B. Povh V. Radescu N. Raicevic T. Ravdandorj P. Reimer E. Rizvi P. Robmann R. Roosen A. Rostovtsev M. Rotaru J.E. Ruiz Tabasco S. Rusakov D. Salek D.P.C. Sankey M. Sauter E. Sauvan 4 S. Schmitt L. Schoeffel A. Sch¨oning H.-C. Schultz-Coulon F. Sefkow L.N. Shtarkov S. Shushkevich T. Sloan I. Smiljanic Y. Soloviev P. Sopicki D. South V. Spaskov A. Specka 3 Z. Staykova M. Steder B. Stella G. Stoicea U. Straumann T. Sykora P.D. Thompson T.H. Tran 2 D. Traynor P. Tru¨ol I. Tsakov B. Tseepeldorj J. Turnau A. Valkarova C. Vallee 4 P. van Mechelen Y. Vazdik D. Wegener E. W¨unsch J. Žáček J. Zálešák Zhiqing Zhang 2 A. Zhokin H. Zohrabyan F. Zomer 2
1 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
2 LAL - Laboratoire de l'Accélérateur Linéaire
3 LLR - Laboratoire Leprince-Ringuet
4 CPPM - Centre de Physique des Particules de Marseille
Abstract : First measurements are presented of the diffractive cross section sigma(ep) -> eXY at centre-of-mass energies root s of 225 and 252 GeV, together with a precise new measurement at root s of 319 GeV, using data taken with the H1 detector in the years 2006 and 2007. Together with previous H1 data at root s of 301 GeV, the measurements are used to extract the diffractive longitudinal structure function F(L)(D) in the range of photon virtualities 4.0 <= Q(2) <= 44.0 GeV(2) and fractional proton longitudinal momentum loss 5 x 10(-4) <= x(P) <= 3 x 10(-3). The measured F(L)(D) is compared with leading twist predictions based on diffractive parton densities extracted in NLO QCD fits to previous measurements of diffractive Deep-Inelastic Scattering and with a model which additionally includes a higher twist contribution derived from a colour dipole approach. The ratio of the diffractive cross section induced by longitudinally polarised photons to that for transversely polarised photons is extracted and compared with the analogous quantity for inclusive Deep-Inelastic Scattering.
Document type :
Journal articles
Complete list of metadatas
http://hal.in2p3.fr/in2p3-00662685
Contributor : Sabine Starita <>
Submitted on : Tuesday, January 24, 2012 - 5:16:19 PM
Last modification on : Saturday, October 3, 2020 - 3:18:30 AM

Links full text

openaccess

Identifiers

Collections

IN2P3 | UPMC | CPPM | LAL | LLR | LPNHE | CNRS | X | X-LLR | UNIV-AMU | X-DEP-PHYS | SORBONNE-UNIVERSITE | UNIV-PARIS7 | USPC | SU-SCIENCES | UNIV-PARIS | UP-SCIENCES

Citation

F.D. Aaron, C. Alexa, V. Andreev, S. Backovic, A. Baghdasaryan, et al.. Measurement of the diffractive longitudinal structure function F(L)(D) at HERA. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2011, 71, pp.1836. ⟨10.1140/epjc/s10052-011-1836-6⟩. ⟨in2p3-00662685⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

629