Professor Dr.rer.nat. Dipl.Phys. Alfons Weber FInstP, MA Ox: Publications

Single and multi-photon events with missing energy in e⁺e^- collisions at 161 GeV<√s<172 GeV

PHYSICS LETTERS B 415:3 (1997) 299-310

Authors:

M Acciarri, O Adriani, M Aguilar-Benitez, S Ahlen, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, F Anselmo, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, S Banerjee, S Banerjee, K Banicz, A Barczyk, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, S Bhattacharya, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, L Boldizsar, B Borgia, D Bourilkov, M Bourquin, S Braccini, JG Branson, V Brigljevic, IC Brock, A Buffini, A Buijs, JD Burger, WJ Burger, J Busenitz, A Button, XD Cai, M Campanelli, M Capell, GC Romeo, G Carlino, AM Cartacci, J Casaus, G Castellini, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, YH Chang, UK Chaturvedi, SV Chekanov, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, X Chereau, G Chiefari, CY Chien, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B de la Cruz, A Csilling, TS Dai, R D'Alessandro, R de Asmundis, A Degre, K Deiters, D della Volpe, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D van Dierendonck, F Di Lodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, MT Dova, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H El Mamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, O Fedin, M Felcini, B Fenyi, T Ferguson, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, I Fisk, G Forconi, L Fredj, K Freudenreich, C Furetta, Y Galaktionov, SN Ganguli, P Garcia-Abia, SS Gau, S Gentile, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, B Hartmann, A Hasan, D Hatzifotiadou, T Hebbeker, A Herve, WC van Hoek, H Hofer, SJ Hong, H Hoorani, SR Hou, G Hu, V Innocente, K Jenkes, BN Jin, LW Jones, P de Jong, I Josa-Mutuberria, A Kasser, RA Khan, D Kamrad, Y Kamyshkov, JS Kapustinsky, Y Karyotakis, M Kaur, MN Kienzle-Focacci, D Kim, DH Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, A Kopp, I Korolko, V Koutsenko, RW Kraemer, W Krenz, A Kunin, PL de Guevara, I Laktineh, G Landi, C Lapoint, K Lassila-Perini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P Le Coultre, JM Le Goff, R Leiste, E Leonardi, P Levtchenko, C Li, CH Lin, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Luminari, W Lustermann, WG Ma, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, D Mangeol, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, D McNally, RR McNeil, S Mele, L Merola, M Meschini, WJ Metzger, M von der Mey, Y Mi, A Mihul, AJW van Mil, G Mirabelli, J Mnich, P Molnar, B Monteleoni, R Moore, S Morganti, T Moulik, R Mount, S Muller, F Muheim, AJM Muijs, S Nahn, M Napolitano, F Nessi-Tedaldi, H Newman, T Niessen, A Nippe, A Nisati, H Nowak, YD Oh, H Opitz, G Organtini, R Ostonen, C Palomares, D Pandoulas, S Paoletti, P Paolucci, HK Park, IH Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D Perret-Gallix, B Petersen, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, D Prokofiev, G Rahal-Callot, N Raja, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T van Rhee, S Riemann, K Riles, A Robohm, J Rodin, BP Roe, L Romero, S Rosier-Lees, P Rosselet, W van Rossum, S Roth, JA Rubio, D Ruschmeier, H Rykaczewski, J Salicio, E Sanchez, MP Sanders, ME Sarakinos, S Sarkar, M Sassowsky, C Schafer, V Schegelsky, S Schmidt-Kaerst, D Schmitz, P Schmitz, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, A Shvorob, T Siedenburg, D Son, A Sopczak, B Smith, P Spillantini, M Steuer, DP Stickland, A Stone, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, M Tonutti, SC Tonwar, J Toth, C Tully, H Tuchscherer, KL Tung, Y Uchida, J Ulbricht, U Uwer, E Valente, RT Van de Walle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, A Zalite, Y Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, GY Zhu, RY Zhu, A Zichichi, F Ziegler

Study of hadronic events and measurements of alpha(s) between 30 and 91 GeV

PHYSICS LETTERS B 411:3-4 (1997) 339-353

Authors:

M Acciarri, O Adriani, M AguilarBenitez, S Ahlen, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, F Anselmo, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, S Banerjee, K Banicz, A Barczyk, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, S Bhattacharya, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, L Boldizsar, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, S Braccini, JG Branson, V Brigljevic, IC Brock, A Buffini, A Buijs, JD Burger, WJ Burger, J Busenitz, XD Cai, M Campanelli, M Capell, GC Romeo, G Carlino, AM Cartacci, J Casaus, G Castellini, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, YH Chang, UK Chaturvedi, SV Chekanov, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N COlino, V Commichau, S COstantini, F Cotorobai, B delaCruz, A Csilling, TS Dai, R DAlessandro, R deAsmundis, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, O Fedin, M Felcini, B Fenyi, T Ferguson, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, I Fisk, G Forconi, L Fredj, K Freudenreich, C Furetta, Y Galaktionov, SN Ganguli, P GarciaAbia, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, B Hartmann, A Hasan, D Hatzifotiadou, T Hebbeker, A Herve, WC vanHoek, H Hofer, SJ Hong, H Hoorani, SR Hou, G Hu, V Innocente, H Janssen, K Jenkes, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, D Kamrad, Y Kamyshkov, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, DH Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, A Kopp, I Korolko, V Koutsenko, RW Kraemer, W Krenz, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, C Leggett, JM LeGoff, R Leiste, E Leonardi, P Levtchenko, C Li, CH Lin, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Luminari, W Lustermann, WG Ma, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, D Mangeol, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, P Molnar, B Monteleoni, R Moore, S Morganti, T Moulik, R Mount, S Muller, F Muheim, AJM Muijs, S Nahn, M Napolitano, F NessiTedaldi, H Newman, T Niessen, A Nippe, A Nisati, H Nowak, YD Oh, H Opitz, G Organtini, R Ostonen, C Palomares, D Pandoulas, S Paoletti, P Paolucci, HK Park, LH Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, B Petersen, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, D Prokofiev, G RahalCallot, N Raja, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, S Riemann, K Riles, O Rind, A Robohm, J Rodin, BP Roe, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, D Ruschmeier, H Rykaczewski, J Salicio, E Sanchez, MP Sanders, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, A Shvorob, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, M Tonutti, SC Tonwar, J Toth, C Tully, H Tuchscherer, KL Tung, Y Uchida, J Ulbricht, U Uwer, E Valente, RT VandeWalle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, A Zalite, Y Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, F Ziegler

Study of the weak charged hadronic current in b decays

PHYSICS LETTERS B 393:3-4 (1997) 477-486

Authors:

M Acciarri, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, F Anselmo, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, S Bhattacharya, M Biasini, A Biland, GM Bilei, JJ Blaising, SG Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, JG Branson, V Brigljevic, IC Brock, A Buffini, A Buijs, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, A Csilling, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, O Fedin, M Felcini, B Fenyi, T Ferguson, D Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, C Furetta, Y Galaktionov, SN Ganguli, P GarciaAbia, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, B Hartmann, A Hasan, D Hatzifotiadou, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, V Innocente, H Janssen, K Jenkes, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, D Kamrad, Y Kamyshkov, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, I Korolko, V Koutsenko, RW Kraemer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, JS Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Luminari, W Lustermann, WG Ma, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, P Molnar, B Monteleoni, R Moore, S Morganti, T Moulik, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, T Niessen, A Nippe, A Nisati, H Nowak, H Opitz, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, D Prokofiev, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, A Shvorob, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, M Tonutti, SC Tonwar, J Toth, C Tully, H Tuchscherer, KL Tung, Y Uchida, J Ulbricht, U Uwer, E Valente, RT VandeWalle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, A Zalite, Y Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, F Ziegler

Upsilon production in Z decays

PHYSICS LETTERS B 413:1-2 (1997) 167-175

Authors:

M Acciarri, O Adriani, M AguilarBenitez, S Ahlen, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, F Anselmo, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, S Banerjee, K Banicz, A Barczyk, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, S Bhattacharya, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, L Boldizsar, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, S Braccini, JG Branson, V Brigljevic, IC Brock, A Buffini, A Buijs, JD Burger, WJ Burger, J Busenitz, XD Cai, M Campanelli, M Capell, GC Romeo, G Carlino, AM Cartacci, J Casaus, G Castellini, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, YH Chang, UK Chaturvedi, SV Chekanov, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, A Csilling, TS Dai, R DAlessandro, R deAsmundis, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, O Fedin, M Felcini, B Fenyi, T Ferguson, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, I Fisk, G Forconi, L Fredj, K Freudenreich, C Furetta, Y Galaktionov, SN Ganguli, P GarciaAbia, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, B Hartman, A Hasan, D Hatzifotiadou, T Hebbeker, A Herve, WC vanHoek, H Hofer, SJ Hong, H Hoorani, SR Hou, G Hu, V Innocente, H Janssen, K Jenkes, BN Jin, LW Jones, P deJong, I JosaMatuberria, A Kasser, RA Khan, D Kamrad, Y Kamyshkov, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, DH Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, A Kopp, I Korolko, V Koutsenko, RW Kraemer, W Krenz, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, C Leggett, JM LeGoff, R Leiste, E Leonardi, P Levtchenko, C Li, CH Lin, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Luminari, W Lustermann, WG Ma, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, D Mangeol, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, P Molnar, B Monteleoni, R Moore, S Morganti, T Moulik, R Mount, S Muller, F Muheim, AJM Muijs, S Nahn, M Napolitano, F NessiTedaldi, H Newman, T Niessen, A Nippe, A Nisati, H Nowak, YD Oh, H Opitz, G Organtini, R Ostonen, C Palomares, D Pandoulas, S Paoletti, P Paolucci, HK Park, IH Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, B Petersen, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, D Prokofiev, G RahalCallot, N Raja, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, S Riemann, K Riles, O Rind, A Robohm, J Rodin, BP Roe, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, D Ruschmeier, H Rykaczewski, J Salicio, E Sanchez, MP Sanders, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, A Shvorob, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, M Tonutti, SC Tonwar, J Toth, C Tully, H Tuchscherer, KL Tung, Y Uchida, J Ulbricht, U Uwer, E Valente, RT VandeWalle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, A Zalite, Y Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, F Ziegler

Observation of multiple hard photon final states at √S = 130-140 GeV at LEP

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 384:1-4 (1996) 323-332

Authors:

M Acciarri, A Adam, O Adriani, M Aguilar-Benitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillère, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, G Bobbink, R Bock, A Böhm, B Borgia, A Boucham, D Bourilkov, M Bourquin, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, G Cara Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, X Chereau, G Chiefari, CY Cbien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, Y Commichau, S Costantini, F Cotorobai

Abstract:

We have studied the process e⁺e^- → ny (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb^-1 we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e⁺e^- → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical.

91̽��