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Scaling violations and determination of αs from jet production in γp interactions at HERA

Title
Scaling violations and determination of αs from jet production in γp interactions at HERA
Authors
Chekanov S.Krakauer D.Loizides J.H.Magill 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.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.Kappes A.Katz U.F.Kind O.Paul E.Rautenberg J.Renner R.Schnurbusch H.Stifutkin A.Tandler J.Voss K.C.Wang M.Weber A.Bailey D.S.Brook N.H.Cole J.E.Foster B.Heath G.P.Heath H.F.Robins S.Rodrigues E.Scott J.Tapper R.J.Wing M.Capua M.Mastroberardino A.Schioppa M.Susinno G.Kim J.Y.Kim Y.K.Lee J.H.Lim I.T.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.Olkiewicz K.Stopa P.Zawiejski L.Adamczyk L.Bold T.Grabowska-Bold I.Kisielewska D.Kowal A.M.Kowal M.Kowalski T.Przybycien M.Suszycki L.Szuba D.Szuba J.Kotanski A.Slominski W.Bauerdick L.A.T.Behrens U.Bloch I.Borras K.Chiochia V.Dannheim D.Derrick M.Drews G.Fourletova J.Fox-Murphy A.Fricke U.Geiser A.Goebel F.Gottlicher P.Gutsche O.Haas T.Hain W.Hartner G.F.Hillert S.Kotz U.Kowalski H.Kramberger G.Labes H.Lelas D.Lohr B.Mankel R.Melzer-Pellmann I.-A.Moritz M.Notz D.Petrucci M.C.Polini A.Raval A.Schneekloth U.Selonke F.Wessoleck H.Wichmann R.Wolf G.Youngman C.Zeuner W.Lopez-Duran Viani A.Meyer A.Schlenstedt S.Barbagli G.Gallo E.Genta C.Pelfer P.G.Bamberger A.Benen A.Coppola N.Bell M.Bussey P.J.Doyle A.T.Glasman C.Hamilton J.Hanlon S.Lee S.W.Lupi A.Saxon D.H.Skillicorn I.O.Gialas I.Bodmann B.Carli T.Holm U.Klimek K.Krumnack N.Lohrmann E.Milite M.Salehi H.Stonjek S.Wick K.Ziegler A.Collins-Tooth C.Foudas C.Goncalo R.Long K.R.Metlica F.Tapper A.D.Cloth P.Filges D.Kuze M.Nagano K.Tokushuku K.Yamada S.Yamazaki Y.Barakbaev A.N.Boos E.G.Pokrovskiy N.S.Zhautykov B.O.Lim H.Son D.Barreiro F.Gonzalez O.Labarga L.del Peso J.Redondo I.Tassi E.Terron J.Vazquez M.Barbi M.Bertolin A.Corriveau F.Gliga S.Lainesse J.Padhi S.Stairs D.G.Tsurugai T.Antonov A.Danilov P.Dolgoshein B.A.Gladkov D.Sosnovtsev V.Suchkov S.Dementiev R.K.Ermolov P.F.Golubkov Y.A.Katkov I.I.Khein L.A.Korzhavina I.A.Kuzmin V.A.Levchenko B.B.Lukina O.Y.Proskuryakov A.S.Shcheglova L.M.Vlasov N.N.Zotkin S.A.Bokel C.Engelen J.Grijpink S.Koffeman E.Kooijman P.Maddox E.Pellegrino A.Schagen S.Tiecke H.Tuning N.Velthuis J.J.Wiggers L.de Wolf E.Brummer N.Bylsma B.Durkin L.S.Ling T.Y.Boogert S.Cooper-Sarkar A.M.Devenish R.C.E.Ferrando J.Grzelak G.Matsushita T.Rigby M.Ruske O.Sutton M.R.Walczak R.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.Oh B.Y.Saull P.R.B.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.Abe T.Fusayasu T.Kagawa S.Kohno T.Tawara T.Yamashita T.Hamatsu R.Hirose T.Inuzuka M.Kitamura S.Matsuzawa K.Nishimura T.Arneodo M.Ferrero M.I.Monaco V.Ruspa M.Sacchi R.Solano A.Galea R.Koop T.Levman G.M.Martin J.F.Mirea A.Sabetfakhri A.Butterworth J.M.Gwenlan C.Hall-Wilton R.Jones T.W.Lightwood M.S.West B.J.Ciborowski J.Ciesielski R.Nowak R.J.Pawlak J.M.Smalska B.Sztuk J.Tymieniecka T.Ukleja A.Ukleja J.Zarnecki A.F.Adamus M.Plucinski P.Eisenberg Y.Gladilin L.K.Hochman D.Karshon U.Kcira D.Lammers S.Li L.Reeder D.D.Savin A.A.Smith W.H.Deshpande A.Dhawan S.Hughes V.W.Straub P.B.Bhadra S.Catterall C.D.Fourletov S.Menary S.Soares M.Standage J.
Ewha Authors
박일흥
Issue Date
2003
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN
0370-2693JCR Link
Citation
vol. 560, no. 1-2, pp. 7 - 23
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Differential cross sections for jet photoproduction in the reaction ep → e jet X have been measured with the ZEUS detector at HERA using 82.2 pb-1 of integrated luminosity. Inclusive jet cross sections are presented as a function of the jet transverse energy, ET jet, for jets with ET jet > 17 GeV and pseudorapidity -1 <ηjet <2.5, in the γp centre-of-mass-energy range 142 < Wγp < 293 GeV. Scaled jet invariant cross sections are presented as a function of the dimensionless variable xT ≡ 2ET jet/Wγp for (Wγp) = 180 and 255 GeV. Next-to-leading-order QCD calculations give a good description of the measured differential cross sections in both magnitude and shape. The ratio of scaled jet invariant cross sections at the two (Wγp) values shows clear non-scaling behaviour. A value for the strong coupling constant of αs(MZ) = 0.1224 ± 0.0001 (stat.)-0.0019 +0.0022(exp.)-0.0042 +0.0054(th.) has been extracted from a QCD analysis of the measured dσ/dET jet. The variation of αs with ET jet is in good agreement with the running of αs as predicted by QCD. © 2003 Published by Elsevier Science B.V.
DOI
10.1016/S0370-2693(03)00380-0
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자연과학대학 > 물리학전공 > Journal papers
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