Inclusive jet production in two-photon collisions at LEP

• Published in: Physics letters. B Vol. 602; no. 3-4; pp. 157 - 166
• Main Authors: Aloisio, A., Alviggi, M.G., Arefiev, A., Banerjee, Sw, Bellucci, L., Biglietti, M., Biland, A., Blaising, J.J., Böhm, A., Boldizsar, L., Branson, J.G., Capell, M., Cartacci, A., Cavallo, N., Chemarin, M., Chen, A., Chen, H.S., Chiefari, G., Cifarelli, L., Debreczeni, J., De Salvo, A., Dionisi, C., Engler, A., Extermann, P., Falagan, M.A., Fay, J., Fisk, I., Freudenreich, K., Gentile, S., Giagu, S., Hofer, H., Jones, L.W., Kirkby, J., Kittel, W., König, A.C., Kopal, M., Kraemer, R.W., Krüger, A., Landi, G., Lecomte, P., Lecoq, P., Leiste, R., Lista, L., Luci, C., Marzano, F., McNeil, R.R., Merola, L., Metzger, W.J., Muanza, G.S., Natale, S., Nessi-Tedaldi, F., Newman, H., Novak, T., Pal, I., Palomares, C., Paolucci, P., Paramatti, R., Passaleva, G., Paus, C., Pauss, F., Pedace, M., Pistolesi, E., Rahaman, M.A., Raics, P., Raspereza, A., Ren, D., Rosenbleck, C., Rykaczewski, H., Saremi, S., Sarkar, S., Sanchez, E., Sciacca, C., Shevchenko, S., Shoutko, V., Shvorob, A., Tang, X.W., Tarjan, P., Teyssier, D., Timmermans, C., Ting, S.M., Tung, K.L., Ulbricht, J., Valente, E., Van de Walle, R.T., Vasquez, R., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Vogel, H., Vogt, H., Wang, Q., Wang, X.L., Weber, M., Wienemann, P., Xia, L., Yang, B.Z., Yang, C.G., Yang, M., Yeh, S.C., Zalite, Yu
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25-11-2004; Elsevier Science; Elsevier
• Subjects: Exact sciences and technology; High Energy Physics - Experiment; Physics; The physics of elementary particles and fields; Algorithms; Differential cross sections; Jets; Positron annihilation; Power law; Cross sections; Quantum chromodynamics; Photon collisions
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2004.10.003

Inclusive jet production, e+e−→e+e− jet X, is studied using 560 pb−1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The inclusive differential cross section is measured using a kt jet algorithm as a function of the jet transverse momentum, pt, in the range 3<pt<50 GeV for a pseudorapidity, η, in the range −1<η<1. This cross section is well represented by a power law. For high pt, the measured cross section is significantly higher than the NLO QCD predictions, as already observed for inclusive π± and π0 production.