Inclusive jet cross sections in the Breit frame in neutral current deep inelastic scattering at HERA and determination of αs

Chekanov, S.; Krakauer, D.; 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.; Romeo, G. Cara; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; Pasquale, S. De; Giusti, P.; Iacobucci, G.; Margotti, A.; Nania, R.; Palmonari, F.; Pesci, A.; Sartorelli, G.; Zichichi, A.; Aghuzumtsyan, G.; Bartsch, D.; Brock, I.; Crittenden, J.; Goers, S.; Hartmann, H.; Hilger, E.; Irrgang, P.; Jakob, H.‐P.; Kappes, A.; Katz, U.; Kerger, R.; Kind, O. M.; Paul, E.; Rautenberg, J.; Renner, R.; Schnurbusch, H.; Stifutkin, A.; Tandler, J.; Voss, K.; Weber, A.; Bailey, D. C.; Brook, N. H.; Cole, J. E.; Foster, B.; Heath, G. P.; Heath, H. F.; Robins, S. A.; 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.; Ye, Ning; Paganis, E.; Ren, Z. L.; Schmidke, W. B.; Sciulli, F.; Chwastowski, J. J.; Eskreys, A.; Figiel, J.; Olkiewicz, K.; Piotrzkowski, K.; Przybycień, M.; Stopa, P.; Zawiejski, L.; Adamczyk, L.; Bołd, T.; Grabowska-Bołd, I.; Kisielewska, D.; Kowal, A.M.; Kowal, M.; Kowalski, T.; Przybycień, M.; Suszycki, L.; Szuba, D.; Szuba, J.; Kotański, A.; Słomiński, W.; Bauerdick, L. A. T.; Behrens, U.; Borras, K.; Chiochia, V.; Dannheim, D.; Derrick, M.; Drews, G.; Fourletova, J.; Fox-Murphy, A.; Fricke, U.; Geiser, A.; Göebel, F.; Göttlicher, P.; Gutsche, O.; Haas, T.; Hain, W.; Hartner, G.; Hillert, S.; Kötz, U.; Kowalski, H.; Kramberger, G.; Labes, H.; Lelas, D.; Löhr, B.; Mankel, R.; Martı́nez, M.; Melzer-Pellmann, I.-A.; Moritz, M.; Notz, D.; Petrucci, M.C.; Polini, A.; Raval, A.; Schneekloth, U.; Selonke, F.; Surrow, B.; Wessoleck, H.; Wichmann, R.; Wolf, G.; Youngman, C.; Zeuner, Wolfram Dietrich; Viani, A. Lopez-Duran; Meyer, A.; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Genta, C.; Pelfer, P. G.; Bamberger, A.; Benen, A.; Coppola, N.; Raach, H.; Bell, M. A.; Bussey, P.; Doyle, A. T.; Glasman, C.; Hanlon, S.; Lee, S.W.; Lupi, A.; McCance, Gavin; 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.; Gonçalo, R.; Long, K.; Metlica, F.; Miller, D. B.; Tapper, A.; Walker, R.; 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.; González, O.; Labarga, L.; Peso, J. Del; Redondo, I.; Terrón, J.; Vázquez, M.; Barbi, M.; Bertolin, A.; Corriveau, F.; Ochs, A.; Padhi, S.; Stairs, D. G.; St-Laurent, Marie; Tsurugai, T.; Антонов, А.; Данилов, П. А.; Dolgoshein, B. A.; Gladkov, D.; Sosnovtsev, V.; Suchkov, S.; Dementiev, R. K.; Ermolov, P.; Golubkov, Yu. A.; Katkov, I.; Khein, Lev; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Yu.; Proskuryakov, A.S.; Shcheglova, L.M.; Vlasov, N.; Zotkin, S. A.; Bokel, C.H.; Engelen, J.; Grijpink, S.J.L.A.; Koffeman, E.; Kooijman, P.; Maddox, E.; Pellegrino, A.; Schagen, S.E.S.; Tassi, E.; Tiecke, H.; Tuning, N.; Velthuis, J. J.; Wiggers, L.; Wolf, E. de; Brümmer, N.; Bylsma, B.; Durkin, L. S.; Gilmore, J.; Ginsburg, C. M.; Kim, C.L.; Ling, T. Y.; Boogert, Stewart; 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.; Corso, F. Dal; Dusini, S.; Garfagnini, A.; Limentani, S.; Longhin, A.; Parenti, A.; Posocco, M.; Stančo, L.; Turcato, M.; Heaphy, E.A.; Oh, B.Y.; Saull, P. R. B.; Whitmore, J.; Iga, Y.; D’Agostini, G.; Marini, G.; Nigro, A.; Cormack, C. M.; Hart, J. C.; McCubbin, N. A.; Heusch, C. A.; Park, I.H.; Pavel, N.; Abramowicz, H.; Gabareen, A. M.; 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.; Cartiglia, N.; Cirio, R.; Costa, M.; Ferrero, M. I.; Maselli, S.; Monaco, V.; Peroni, C.; Ruspa, M.; Sacchi, R.; Solano, A.; Staiano, A.; Galea, R.; Koop, T.; Levman, G.; Martin, J. F.; Mirea, A.; Sabetfakhri, A.; Butterworth, J. M.; Gwenlan, C.; Hall-Wilton, R.; Jones, T. W.; Lightwood, M. S.; Loizides, J. H.; West, B.J.; Ciborowski, J.; Ciesielski, R.; Nowak, R. J.; Pawlak, J. M.; Smalska, B.; Sztuk, J.; Tymieniecka, T.; Ukleja, A.; Ukleja, J.; Żarnecki, A. F.; Adamus, M.; Pluciński, P.; Eisenberg, Y.; Gladilin, L. K.; Hochman, D.; Karshon, U.; Kçira, 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. S.; Standage, J.

doi:10.1016/s0370-2693(02)02763-6

Cited by 94 publications

(81 citation statements)

References 82 publications

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“…Energy corrections [5,11,18] were then applied to the jets in the laboratory frame and propagated back into E jet T ,B . The jet variables in the laboratory frame were also used to apply additional cuts on the selected sample, as explained in a recent publication [4]: events were removed from the sample if any of the jets was in the backward region of the detector (η jet LAB < −2) and jets were not included in the final sample if E jet T ,LAB < 2.5 GeV.…”

Section: Data Selection and Jet Searchmentioning

confidence: 99%

“…The number of flavours was set to five and the renormalisation (μ R ) and factorisation (μ F ) scales were chosen to be μ R = E jet T ,B and μ F = Q, respectively. The strong coupling constant was calculated at two loops with Λ (5) MS = 226 MeV, corresponding to α s (M Z ) = 0.118. The calculations were performed using the ZEUS-S [25] parameterisations of the proton PDFs.…”

Section: Qcd Calculationsmentioning

confidence: 99%

“…The jet observables used to test pQCD included dijet [1][2][3][4], inclusive-jet [2,[4][5][6] and multijet [7,8] cross sections in neutral current (NC) deep inelastic ep scattering (DIS), dijet [9][10][11][12][13], inclusive-jet [14,15] and multijet [16] cross sections in photoproduction and the internal structure of jets in NC [17][18][19] and charged current [20] DIS.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, such measurements allow tests of pQCD in the widest phase-space region for jet production. In particular, previous measurements of inclusive-jet cross sections in NC DIS at high Q 2 [5], where Q 2 is the negative of the square of the four-momentum transfer, provided the most precise determination of α s at HERA to date. This Letter presents new measurements of differential inclusive-jet cross sections as a function of the jet transverse energy in the Breit frame, E jet T ,B , and Q 2 for different values of R. For R = 1, this analysis is based on the same inclusive-jet data sample presented in a recent publication [4].…”

Section: Introductionmentioning

confidence: 99%

“…The results have been compared with NLO QCD calculations using recent parameterisations of the parton distribution functions (PDFs) of the proton [25][26][27]. In addition, an updated determination of α s and of its scale dependence has been obtained using a data sample which corresponds to more than a twofold increase in luminosity with respect to the previous analysis [5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Chekanov¹,

Derrick²,

Magill³

et al. 2007

Physics Letters B

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Differential inclusive-jet cross sections have been measured for different jet radii in neutral current deep inelastic ep scattering for boson virtualities Q^2 > 125 GeV^2 with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb^-1. Jets were identified in the Breit frame using the k_T cluster algorithm in the longitudinally inclusive mode for different values of the jet radius R. Differential cross sections are presented as functions of Q^2 and the jet transverse energy, E_T,B^jet. The dependence on R of the inclusive-jet cross section has been measured for Q^2 > 125 and 500 GeV^2 and found to be linear with R in the range studied. Next-to-leading-order QCD calculations give a good description of the measurements for 0.5 <= R <= 1. A value of alpha_s(M_Z) has been extracted from the measurements of the inclusive-jet cross-section dsigma/dQ^2 with R=1 for Q^2 > 500 GeV^2: alpha_s(M_Z) = 0.1207 +-0. AbstractDifferential inclusive-jet cross sections have been measured for different jet radii in neutral current deep inelastic ep scattering for boson virtualities Q 2 > 125 GeV 2 with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb −1 . Jets were identified in the Breit frame using the k T cluster algorithm in the longitudinally inclusive mode for different values of the jet radius R. Differential cross sections are presented as functions of Q 2 and the jet transverse energy, E jet T ,B . The dependence on R of the inclusive-jet cross section has been measured for Q 2 > 125 and 500 GeV 2 and found to be linear with R in the range studied. Next-to-leading-order QCD calculations give a good description of the measurements for 0.5 R 1. A value of α s (M Z ) has been extracted from the measurements of the inclusive-jet cross section dσ/dQ 2 with R = 1 for Q 2 > 500 GeV 2 : α s (M Z ) = 0.1207 ± 0.0014(stat.) +0.0035 −0.0033 (exp.) +0.0022 −0.0023 (th.). The variation of α s with E jet T ,B is in a good agreement with the running of α s as predicted by QCD.

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