@article{3053987,
    title = "Determination of the e(+)e(-)->gamma gamma(gamma) cross-section at
centre-of-mass energies ranging from 189 GeV to 202 GeV",
    author = "Abreu, P and Adam, W and Adye, T and Adzic, P and Albrecht, Z and and Alderweireld, T and Alekseev, GD and Alemany, R and Allmendinger, T and and Allport, PP and Almehed, S and Amaldi, U and Amapane, N and Amato, S and and Anassontzis, EG and Andersson, P and Andreazza, A and Andringa, S and and Antilogus, P and Apel, WD and Arnoud, Y and Asman, B and Augustin, JE and and Augustinus, A and Baillon, P and Ballestrero, A and Bambade, P and and Barao, F and Barbiellini, G and Barbier, R and Bardin, DY and Barker, G and and Baroncelli, A and Battaglia, M and Baubillier, M and Becks, KH and and Begalli, M and Behrmann, A and Beilliere, P and Belokopytov, Y and and Belous, K and Benekos, NC and Benvenuti, AC and Berat, C and Berggren, M and and Berntzon, L and Bertrand, D and Besancon, M and Bilenky, MS and and Bizouard, MA and Bloch, D and Blom, HM and Bonesini, M and Boonekamp, M and and Booth, PSL and Borisov, G and Bosio, C and Botner, O and Boudinov, E and and Bouquet, B and Bourdarios, C and Bowcock, TJV and Boyko, I and and Bozovic, I and Bozzo, M and Bracko, M and Branchini, P and Brenner, RA and and Bruckman, P and Brunet, JM and Bugge, L and Buran, T and Buschbeck, and B and Buschmann, P and Cabrera, S and Caccia, M and Calvi, M and and Camporesi, T and Canale, V and Carena, F and Carroll, L and Gimenez, MVC and and Cattai, A and Cavallo, FR and Chapkin, M and Charpentier, P and and Checchia, P and Chelkov, GA and Chierici, R and Chliapnikov, P and and Chochula, P and Chorowicz, V and Chudoba, J and Cieslik, K and Collins, and P and Contri, R and Cortina, E and Cosme, G and Cossutti, F and Costa, M and and Crawley, HB and Crennell, D and Crosetti, G and Maestro, JC and and Czellar, S and D'Hondt, J and Dalmau, J and Davenport, M and Da Silva, W and and Della Ricca, G and Delpierre, P and Demaria, N and De Angelis, A and and De Boer, W and De Clercq, C and De Lotto, B and De Min, A and De Paula, and L and Dijkstra, H and Di Ciaccio, L and Dolbeau, J and Doroba, K and and Dracos, M and Drees, J and Dris, M and Eigen, G and Ekelof, T and and Ellert, M and Elsing, M and Engel, JP and Santo, ME and Fanourakis, G and and Fassouliotis, D and Feindt, M and Fernandez, J and Ferrer, A and and Ferrer-Ribas, E and Ferro, F and Firestone, A and Flagmeyer, U and and Foeth, H and Fokitis, E and Fontanelli, F and Franek, B and Frodesen, AG and and Fruhwirth, R and Fulda-Quenzer, F and Fuster, J and Galloni, A and and Gamba, D and Gamblin, S and Gandelman, M and Garcia, C and Gaspar, C and and Gaspar, M and Gasparini, U and Gavillet, P and Gazis, EN and Gele, D and and Geralis, T and Ghodbane, N and Gil, I and Glege, F and Gokieli, R and and Golob, B and Gomez-Ceballos, G and Goncalves, P and Caballero, IG and and Gopal, G and Gorn, L and Gouz, Y and Gracco, V and Grahl, J and and Graziani, E and Gris, P and Grosdidier, G and Grzelak, K and Guy, J and and Haag, C and Hahn, F and Hahn, S and Haider, S and Hajduk, Z and and Hallgren, A and Hamacher, K and Hansen, J and Harris, FJ and Hauler, F and and Hedberg, V and Heising, S and Hernandez, JJ and Herquet, P and Herr, and H and Higon, E and Holmgren, SO and Holt, PJ and Hoorelbeke, S and and Houlden, M and Hrubec, J and Huber, M and Hughes, GJ and Hultqvist, K and and Jackson, JN and Jacobsson, R and Jalocha, P and Janik, R and and Jarlskog, C and Jarlskog, G and Jarry, P and Jean-Marie, B and Jeans, D and and Johansson, EK and Jonsson, P and Joram, C and Juillot, P and and Jungermann, L and Kapusta, F and Karafasoulis, K and Katsanevas, S and and Katsoufis, EC and Keranen, R and Kernel, G and Kersevan, BP and and Khokhlov, Y and Khomenko, BA and Khovanski, NN and Kiiskinen, A and and King, B and Kinvig, A and Kjaer, NJ and Klapp, O and Kluit, P and and Kokkinias, P and Kostioukhine, V and Kourkoumelis, C and Kouznetsov, O and and Krammer, M and Kriznic, E and Krumstein, Z and Kubinec, P and and Kucewicz, W and Kurowska, J and Kurvinen, K and Lamsa, JW and Lane, DW and and Lapin, V and Laugier, JP and Lauhakangas, R and Leder, G and and Ledroit, F and Leinonen, L and Leisos, A and Leitner, R and Lemonne, J and and Lenzen, G and Lepeltier, V and Lethuillier, M and Libby, J and and Liebig, W and Liko, D and Lipniacka, A and Lippi, I and Loerstad, B and and Loken, JG and Lopes, JH and Lopez, JM and Lopez-Fernandez, R and Loukas, and D and Lutz, P and Lyons, L and MacNaughton, J and Mahon, JR and Maio, A and and Malek, A and Maltezos, S and Malychev, V and Mandl, F and Marco, J and and Marco, R and Marechal, B and Margoni, M and Marin, JC and Mariotti, and C and Markou, A and Martinez-Rivero, C and Garcia, SM and Masik, J and and Mastroyiannopoulos, N and Matorras, F and Matteuzzi, C and Matthiae, G and and Mazzucato, F and Mazzucato, M and Mc Cubbin, M and Mc Kay, R and Mc and Nulty, R and Mc Pherson, G and Merle, E and Meroni, C and Meyer, WT and and Miagkov, A and Migliore, E and Mirabito, L and Mitaroff, WA and and Mjoernmark, U and Moa, T and Moch, M and Moeller, R and Moenig, K and and Monge, MR and Moraes, D and Morettini, P and Morton, G and Mueller, U and and Muenich, K and Mulders, M and Mulet-Marquis, C and Mundim, LM and and Muresan, R and Murray, WJ and Muryn, B and Myatt, G and Myklebust, T and and Naraghi, F and Nassiakou, M and Navarria, FL and Nawrocki, K and Negri, and P and Neufeld, N and Nicolaidou, R and Nielsen, BS and Niezurawski, P and and Nikolenko, M and Nomokonov, V and Nygren, A and Mucha, AO and and Obraztsov, V and Olshevski, AG and Onofre, A and Orava, R and Orazi, G and and Osterberg, K and Ouraou, A and Oyanguren, A and Paganoni, M and and Paiano, S and Pain, R and Paiva, R and Palacios, J and Papadopoulou, TD and and Pape, L and Parkes, C and Parodi, F and Parzefall, U and Passeri, A and and Passon, O and Pavel, T and Pegoraro, M and Peralta, L and Pernicka, and M and Perrotta, A and Petridou, C and Petrolini, A and Phillips, HT and and Pierre, F and Pimenta, M and Piotto, E and Podobnik, T and Poireau, V and and Pol, ME and Polok, G and Poropat, P and Pozdniakov, V and Privitera, and P and Pukhaeva, N and Pullia, A and Radojicic, D and Ragazzi, S and and Rahmani, H and Rames, J and Ratoff, PN and Read, AL and Rebecchi, P and and Redaelli, NG and Regler, M and Rehn, J and Reid, D and Reinertsen, P and and Reinhardt, R and Renton, PB and Resvanis, LK and Richard, F and Ridky, J and and Rinaudo, G and Ripp-Baudot, I and Romero, A and Ronchese, P and and Rosenberg, EI and Rosinsky, P and Roudeau, P and Rovelli, T and and Ruhlmann-Kleider, V and Ruiz, A and Saarikko, H and Sacquin, Y and and Sadovsky, A and Sajot, G and Salt, J and Sampsonidis, D and Sannino, M and and Savoy-Navarro, A and Schwemling, P and Schwering, B and and Schwickerath, U and Scuri, F and Seager, P and Sedykh, Y and Segar, AM and and Seibert, N and Sekulin, R and Sette, G and Shellard, RC and Siebel, and M and Simard, L and Simonetto, F and Sisakian, AN and Smadja, G and and Smirnova, O and Smith, GR and Solovianov, O and Sopczak, A and and Sosnowski, R and Spassov, T and Spiriti, E and Squarcia, S and Stanescu, and C and Stanitzki, M and Stevenson, K and Stocchi, A and Strauss, J and and Strub, R and Stugu, B and Szczekowski, M and Szeptycka, M and Tabarelli, and T and Taffard, A and Tegenfeldt, F and Terranova, F and Timmermans, J and and Tinti, N and Tkatchev, LG and Tobin, M and Todorova, S and Tome, B and and Tonazzo, A and Tortora, L and Tortosa, P and Transtromer, G and and Treille, D and Tristram, G and Trochimczuk, M and Troncon, C and and Turluer, ML and Tyapkin, IA and Tyapkin, P and Tzamarias, S and and Ullaland, O and Uvarov, V and Valenti, G and Vallazza, E and Van Dam, P and and Van den Boeck, W and Van Eldik, J and Van Lysebetten, A and van and Remortel, N and Van Vulpen, I and Vegni, G and Ventura, L and Venus, W and and Verbeure, F and Verdier, P and Verlato, M and Vertogradov, LS and and Verzi, V and Vilanova, D and Vitale, L and Vlasov, E and Vodopyanov, AS and and Voulgaris, G and Vrba, V and Wahlen, H and Washbrook, AJ and Weiser, and C and Wicke, D and Wickens, JH and Wilkinson, GR and Winter, M and Wolf, and G and Yi, J and Yushchenko, O and Zalewska, A and Zalewski, P and and Zavrtanik, D and Zevgolatakos, E and Zimin, NI and Zintchenko, A and and Zoller, P and Zumerle, G and Zupan, M",
    journal = "PHYSICS LETTERS B",
    year = "2000",
    volume = "491",
    number = "1-2",
    pages = "67-80",
    publisher = "Elsevier",
    issn = "0370-2693",
    doi = "10.1016/S0370-2693(00)01013-3",
    abstract = "A test of the QED process e(+)e(-) –> gamma gamma>(*) over bar
*(gamma) is reported. The data analysed were collected with the DELPHI
detector in 1998 and 1999 at the highest energies achieved at LEP,
reaching 202 GeV in the centre-of-mass. The total integrated luminosity
amounts to 375.7 pb(-1). The differential and total cross-sections for
the process e(+)e(-) –> gamma gamma were measured, and found to be in
agreement with the QED prediction. 95% confidence level (C.L.) lower
limits on the QED cut-off parameters of Lambda (+) > 330 GeV and
Lambda_ > 320 GeV were derived. A 95% C.L. lower bound on the mass of
an excited electron of 311 GeV/c(2) (for lambda gamma = 1) was obtained,
s-channel virtual graviton exchange was searched for, resulting in 95%
C.L. lower limits on the string mass scale, M-S: M-S > 713 GeV/c(2)
(lambda = 1) and M-S > 691 GeV/c(2) (lambda = -1). (C) 2000 Published by
Elsevier Science B.V."
}