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Study of the pion trajectory in the photoproduction of leading neutrons at HERA

Title
Study of the pion trajectory in the photoproduction of leading neutrons at HERA
Authors
Chekanov S.Derrick M.Krakauer D.Loizides J.H.Magill S.Miglioranzi S.Musgrave B.Repond J.Yoshida R.Mattingly M.C.K.Antonioli P.Bari G.Basile M.Bellagamba L.Boscherini D.Bruni A.Bruni G.Cara Romeo G.Cifarelli L.Cindolo F.Contin A.Corradi M.De Pasquale S.Giusti P.Iacobucci G.Margotti A.Montanari A.Nania R.Palmonari F.Pesci A.Sartorelli G.Zichichi A.Aghuzumtsyan G.Bartsch D.Brock I.Goers S.Hartmann H.Hilger E.Irrgang P.Jakob H.-P.Kind O.Meyer U.Paul E.Rautenberg J.Renner R.Stifutkin A.Tandler J.Voss K.C.Wang M.Bailey D.S.Brook N.H.Cole J.E.Heath G.P.Namsoo T.Robins S.Wing M.Capua M.Mastroberardino A.Schioppa M.Susinno G.Kim J.Y.Lim I.T.Ma K.J.Pac M.Y.Caldwell A.Helbich M.Liu X.Mellado B.Ning Y.Paganis S.Ren Z.Schmidke W.B.Sciulli F.Chwastowski J.Eskreys A.Figiel J.Galas A.Olkiewicz K.Stopa P.Zawiejski L.Adamczyk L.Bold T.Grabowska-Bold I.Kisielewska D.Kowal A.M.Kowal M.Lukasik J.Przybycien M.Suszycki L.Szuba D.Szuba J.Kotanski A.Slominski W.Adler V.Behrens U.Bloch I.Borras K.Chiochia V.Dannheim D.Drews G.Fourletova J.Fricke U.Geiser A.Gottlicher P.Gutsche O.Haas T.Hain W.Hillert S.Horn C.Kahle B.Kotz U.Kowalski H.Kramberger G.Labes H.Lelas D.Lim H.Lohr B.Mankel R.Melzer-Pellmann I.-A.Nguyen C.N.Notz D.Nuncio-Quiroz A.E.Polini A.Raval A.Rurua L.Schneekloth U.Stosslein U.Wolf G.Youngman C.Zeuner W.Schlenstedt S.Barbagli G.Gallo E.Genta C.Pelfer P.G.Bamberger A.Benen A.Karstens F.Dobur D.Vlasov N.N.Bell M.Bussey P.J.Doyle A.T.Ferrando J.Hamilton J.Hanlon S.Saxon D.H.Skillicorn I.O.Gialas I.Carli T.Gosau T.Holm U.Krumnack N.Lohrmann E.Milite M.Salehi H.Schleper P.Schorner-Sadenius T.Stonjek S.Wichmann K.Wick K.Ziegler A.Ziegler Ar.Collins-Tooth C.Foudas C.Goncalo R.Long K.R.Tapper A.D.Cloth P.Filges D.Kataoka M.Nagano K.Tokushuku K.Yamada S.Yamazaki Y.Barakbaev A.N.Boos E.G.Pokrovskiy N.S.Zhautykov B.O.Son D.Piotrzkowski K.Barreiro F.Glasman C.Gonzalez O.Labarga L.Del Peso J.Tassi E.Terron J.Zambrana M.Barbi M.Corriveau F.Gliga S.Lainesse J.Padhi S.Stairs D.G.Walsh R.Tsurugai T.Antonov A.Danilov P.Dolgoshein B.A.Gladkov D.Sosnovtsev V.Suchkov S.Dementiev R.K.Ermolov P.F.Katkov I.I.Khein L.A.Korzhavina I.A.Kuzmin V.A.Levchenko B.B.Lukina O.Yu.Proskuryakov A.S.Shcheglova L.M.Zotkin S.A.Coppola N.Grijpink S.Koffeman E.Kooijman P.Maddox E.Pellegrino A.Schagen S.Tiecke H.Vazquez M.Wiggers L.De Wolf E.Brummer N.Bylsma B.Durkin L.S.Ling T.Y.Cooper-Sarkar A.M.Cottrell A.Devenish R.C.E.Foster B.Grzelak G.Gwenlan C.Kohno T.Patel S.Straub P.B.Walczak R.Bertolin A.Brugnera R.Carlin R.Dal Corso F.Dusini S.Garfagnini A.Limentani S.Longhin A.Parenti A.Posocco M.Stanco L.Turcato M.Heaphy E.A.Metlica F.Oh B.Y.Whitmore J.J.Iga Y.D'Agostini G.Marini G.Nigro A.Cormack C.Hart J.C.McCubbin N.A.Heusch C.Park I.H.Pavel N.Abramowicz H.Gabareen A.Kananov S.Kreisel A.Levy A.Kuze M.Fusayasu T.Kagawa S.Tawara T.Yamashita T.Hamatsu R.Hirose T.Inuzuka M.Kaji H.Kitamura S.Matsuzawa K.Costa M.Ferrero M.I.Monaco V.Sacchi R.Solano A.Arneodo M.Ruspa M.Koop T.Martin J.F.Mirea A.Butterworth J.M.Hall-Wilton R.Jones T.W.Lightwood M.S.Sutton M.R.Targett-Adams C.Ciborowski J.Ciesielski R.Luzniak P.Nowak R.J.Pawlak J.M.Sztuk J.Tymieniecka T.Ukleja A.Ukleja J.Zarnecki A.F.Adamus M.Plucinski P.Eisenberg Y.Hochman D.Karshon U.Riveline M.Everett A.Gladilin L.K.Kcira D.Lammers S.Li L.Reeder D.D.Rosin M.Ryan P.Savin A.A.Smith W.H.Deshpande A.Dhawan S.Bhadra S.Catterall C.D.Fourletov S.Hartner G.Menary S.Soares M.Standage J.
Ewha Authors
박일흥
SCOPUS Author ID
박일흥scopusscopus
Issue Date
2005
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN
0370-2693JCR Link
Citation
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics vol. 610, no. 41337, pp. 199 - 211
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Energetic neutrons produced in ep collisions at HERA have been studied with the ZEUS detector in the photoproduction regime at a mean photon-proton center-of-mass energy of 220 GeV. The neutrons carry a large fraction 0.64<xL<0.925 of the incoming proton energy, and the four-momentum transfer squared at the proton-neutron vertex is small, |t|<0.425 GeV2. The xL distribution of the neutrons is measured in bins of t. The (1-xL) distributions in the t bins studied satisfy a power law dN/dxL∝(1-xL)a(t), with the powers a(t) following a linear function of t: a(t)=0.88±0. 09(stat.)-0.39+0.34(syst.)-(2.81±0.42(stat.)-0.62+1.13(syst.) GeV-2)t. This result is consistent with the expectations of pion-exchange models, in which the incoming proton fluctuates to a neutron-pion state, and the electron interacts with the pion. © 2005 Elsevier B.V. All rights reserved.
DOI
10.1016/j.physletb.2005.01.101
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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