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Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of αs

Title
Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of αs
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. 558, no. 1-2, pp. 41 - 58
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The subjet multiplicity has been measured in neutral current e+p interactions at Q2 > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb-1. Jets were identified in the laboratory frame using the longitudinally invariant kT cluster algorithm. The number of jet-like substructures within jets, known as the subjet multiplicity, is defined as the number of clusters resolved in a jet by reapplying the jet algorithm at a smaller resolution scale ycut. Measurements of the mean subjet multiplicity, (nsbj), for jets with transverse energies ET,jet > 15 GeV are presented. Next-to-leading-order perturbative QCD calculations describe the measurements well. The value of αs(MZ), determined from (nsbj) at ycut = 10-2 for jets with 25 < ET,jet < 71 GeV, is αs(MZ) = 0.1187 ± 0.0017(stat.)-0.0009 +0.0024(syst.) -0.0076 +0.0093(th.). © 2003 Published by Elsevier Science B.V.
DOI
10.1016/S0370-2693(03)00216-8
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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