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Inclusive-jet cross sections in NC DIS at HERA and a comparison of the kT, anti-kT and SIScone jet algorithms

For the first time, differential inclusive-jet cross sections have been measured in neutral current deep inelastic ep scattering using the anti-kT and SIScone algorithms. The measurements were made for boson virtualities Q2>125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of...

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Bibliographic Details
Published in:Physics letters. B 2010-07, Vol.691 (3), p.127-137
Main Authors: Abt, I., Adamus, M., Aggarwal, R., Antonioli, P., Antonov, A., Arneodo, M., Barreiro, F., Basile, M., Behr, J., Bindi, M., Bołd, T., Boos, E.G., Bot, D., Brümmer, N., Bruni, A., Butterworth, J.M., Carlin, R., Catterall, C.D., Ciborowski, J., Ciesielski, R., Cifarelli, L., Coppola, N., Corso, F. Dal, del Peso, J., Dementiev, R.K., Dobur, D., Ermolov, P.F., Eskreys, A., Ferrando, J., Figiel, J., Fourletov, S., Garfagnini, A., Geiser, A., Gialas, I., Grebenyuk, J., Haas, T., Hain, W., Hart, J.C., Hartner, G., Hilger, E., Hori, R., Iacobucci, G., Karshon, U., Kaur, M., Khein, L.A., Kollar, D., Korol, Ie, Kowalski, H., Kulinski, P., Kuprash, O., Limentani, S., Ling, T.Y., Long, K.R., Magill, S., Malka, J., Mankel, R., Margotti, A., Matsumoto, T., Melzer-Pellmann, I.-A., Nagano, K., Nuncio-Quiroz, A.E., Oh, B.Y., Okazaki, N., Olkiewicz, K., Papageorgiu, K., Pawlak, J.M., Pawlik, B., Pelfer, P.G., Perrey, H., Pokrovskiy, N.S., Polini, A., Proskuryakov, A.S., Ron, E., Sacchi, R., Savin, A.A., Schioppa, M., Schmidke, W.B., Schönberg, V., Schwartz, J., Singh, I., Son, D., Spiridonov, A., Stewart, T.P., Stopa, P., Szuba, J., Tapper, A.D., Tomalak, O., Tomaszewska, J., Turcato, M., Vázquez, M., Verbytskyi, A., Walczak, R., Wolfe, H., Wrona, K., Yamada, S., Zenaiev, O., Zeuner, W., Zhou, C., Zolko, M., Zulkapli, Z.
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Language:English
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Summary:For the first time, differential inclusive-jet cross sections have been measured in neutral current deep inelastic ep scattering using the anti-kT and SIScone algorithms. The measurements were made for boson virtualities Q2>125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 82 pb−1 and the jets were identified in the Breit frame. The performance and suitability of the jet algorithms for their use in hadron-like reactions were investigated by comparing the measurements to those performed with the kT algorithm. Next-to-leading-order QCD calculations give a good description of the measurements. Measurements of the ratios of cross sections using different jet algorithms are also presented; the measured ratios are well described by calculations including up to O(αs3) terms. Values of αs(MZ) were extracted from the data; the results are compatible with and have similar precision to the value extracted from the kT analysis.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2010.06.015