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We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb(-1) collected during the high energy runs of 1996, The distributions of event shape variables and the energy dependence of their mean values are well reproduced by QCD models. From a comparison of the data with resummed O(alpha(s)(2)) QCD calculations, we determine the strong coupling constant at the two energies. Combining this with our earlier measurements we find that the strong coupling constant decreases with increasing energy as expected in QCD. (C) 1997 Published by Elsevier Science B.V.

QCD studies and determination of alpha(s) in e(+)e(-) collisions at root s=161 GeV and 172 GeV / Acciarri, M; Adriani, O; Aguilarbenitez, M; Ahlen, S; Alcaraz, J; Alemanni, G; Allaby, J; Aloisio, A; Alverson, G; Alviggi, Mg; Ambrosi, G; Anderhub, H; Andreev, Vp; Angelescu, T; Anselmo, F; Arefiev, A; Azemoon, T; Aziz, T; Bagnaia, Paolo; Baksay, L; Banerjee, S; Banerjee, S; Banicz, K; Barczyk, A; Barillere, R; Barone, Luciano Maria; Bartalini, P; Baschirotto, A; Basile, M; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Berdugo, J; Berges, P; Bertucci, B; Betev, Bl; Bhattacharya, S; Biasini, M; Biland, A; Bilei, Gm; Blaising, Jj; Blyth, Sc; Bobbink, Gj; Bock, R; Bohm, A; Boldizsar, L; Borgia, B; Bourilkov, D; Bourquin, M; Braccini, S; Branson, Jg; Brigljevic, V; Brock, Ic; Buffini, A; Buijs, A; Burger, Jd; Burger, Wj; Busenitz, J; Button, A; Cai, Xd; Campanelli, M; Capell, M; Romeo, Gc; Carlino, G; Cartacci, Am; Casaus, J; Castellini, G; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Cesaroni, F; Chamizo, M; Chang, Yh; Chaturvedi, Uk; Chekanov, Sv; Chemarin, M; Chen, A; Chen, G; Chen, Gm; Chen, Hf; Chen, Hs; Chereau, X; Chiefari, G; Chien, Cy; Cifarelli, L; Cindolo, F; Civinini, C; Clare, I; Clare, R; Cohn, Ho; Coignet, G; Colijn, Ap; Colino, N; Commichau, V; Costantini, S; Cotorobai, F; Delacruz, B; Csilling, A; Dai, Ts; Dalessandro, R; Deasmundis, R; Degre, A; Deiters, K; Dellavolpe, D; Denes, P; Denotaristefani, F; Dibitonto, D; Diemoz, M; Vandierendonck, D; Dilodovico, F; Dionisi, C; Dittmar, M; Dominguez, A; Doria, A; Dova, Mt; Duchesneau, D; Duinker, P; Duran, I; Dutta, S; Easo, S; Efremenko, Y; Elmamouni, H; Engler, A; Eppling, Fj; Erne, Fc; Ernenwein, Jp; Extermann, P; Fabre, M; Faccini, Riccardo; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Fenyi, B; Ferguson, T; Ferroni, Fernando; Fesefeldt, H; Fiandrini, E; Field, Jh; Filthaut, F; Fisher, Ph; Fisk, I; Forconi, G; Fredj, L; Freudenreich, K; Furetta, C; Galaktionov, Y; Ganguli, Sn; Garciaabia, P; Gau, Ss; Gentile, Simonetta; Gheordanescu, N; Giagu, Stefano; Goldfarb, S; Goldstein, J; Gong, Zf; Gougas, A; Gratta, G; Gruenewald, Mw; Gupta, Vk; Gurtu, A; Gutay, Lj; Hartmann, B; Hasan, A; Hatzifotiadou, D; Hebbeker, T; Herve, A; Vanhoek, Wc; Hofer, H; Hong, Sj; Hoorani, H; Hou, Sr; Hu, G; Innocente, V; Jenkes, K; Jin, Bn; Jones, Lw; Dejong, P; Josamutuberria, I; Kasser, A; Khan, Ra; Kamrad, D; Kamyshkov, Y; Kapustinsky, Js; Karyotakis, Y; Kaur, M; Kienzlefocacci, Mn; Kim, D; Kim, Dh; Kim, Jk; Kim, Sc; Kim, Yg; Kinnison, Ww; Kirkby, A; Kirkby, D; Kirkby, J; Kiss, D; Kittel, W; Klimentov, A; Konig, Ac; Kopp, A; Korolko, I; Koutsenko, V; Kraemer, Rw; Krenz, W; Kunin, A; Deguevara, Pl; Laktineh, I; Landi, G; Lapoint, C; Lassilaperini, K; Laurikainen, P; Lebeau, M; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Lecoultre, P; Legoff, Jm; Leiste, R; Leonardi, E; Levtchenko, P; Li, C; Lin, Ch; Lin, Wt; Linde, Fl; Lista, L; Liu, Za; Lohmann, W; Longo, E; Lu, W; Lu, Ys; Lubelsmeyer, K; Luci, Claudio; Luckey, D; Luminari, L; Lustermann, W; Ma, Wg; Maity, M; Majumder, G; Malgeri, L; Malinin, A; Mana, C; Mangeol, D; Mangla, S; Marchesini, P; Marin, A; Martin, Jp; Marzano, F; Massaro, Ggg; Mcnally, D; Mcneil, Rr; Mele, S; Merola, L; Meschini, M; Metzger, Wj; Vondermey, M; Mi, Y; Mihul, A; Vanmil, Ajw; Mirabelli, G; Mnich, J; Molnar, P; Monteleoni, B; Moore, R; Morganti, S; Moulik, T; Mount, R; Muller, S; Muheim, F; Muijs, Ajm; Nahn, S; Napolitano, M; Nessitedaldi, F; Newman, H; Niessen, T; Nippe, A; Nisati, A; Nowak, H; Oh, Yd; Opitz, H; Organtini, G; Ostonen, R; Palomares, C; Pandoulas, D; Paoletti, S; Paolucci, P; Park, Hk; Park, Ih; Pascale, G; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, F; Peach, D; Pei, Yj; Pensotti, S; Perretgallix, D; Petersen, B; Petrak, S; Pevsner, A; Piccolo, D; Pieri, M; Pinto, Jc; Piroue, Pa; Pistolesi, E; Plyaskin, V; Pohl, M; Pojidaev, V; Postema, H; Produit, N; Prokofiev, D; Rahalcallot, G; Raja, N; Rancoita, Pg; Rattaggi, M; Raven, G; Razis, P; Read, K; Ren, D; Rescigno, M; Reucroft, S; Vanrhee, T; Riemann, S; Riles, K; Robohm, A; Rodin, J; Roe, Bp; Romero, L; Rosierlees, S; Rosselet, P; Vanrossum, W; Roth, S; Rubio, Ja; Ruschmeier, D; Rykaczewski, H; Salicio, J; Sanchez, E; Sanders, Mp; Sarakinos, Me; Sarkar, S; Sassowsky, M; Schafer, C; Schegelsky, V; Schmidtkaerst, S; Schmitz, D; Schmitz, P; Scholz, N; Schopper, H; Schotanus, Dj; Schwenke, J; Schwering, G; Sciacca, C; Sciarrino, D; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shukla, J; Shumilov, E; Shvorob, A; Siedenburg, T; Son, D; Sopczak, A; Smith, B; Spillantini, P; Steuer, M; Stickland, Dp; Stone, A; Stone, H; Stoyanov, B; Straessner, A; Strauch, K; Sudhakar, K; Sultanov, G; Sun, Lz; Susinno, Gf; Suter, H; Swain, Jd; Tang, Xw; Tauscher, L; Taylor, L; Ting, Scc; Ting, Sm; Tonutti, M; Tonwar, Sc; Toth, J; Tully, C; Tuchscherer, H; Tung, Kl; Uchida, Y; Ulbricht, J; Uwer, U; Valente, E; Vandewalle, Rt; Vesztergombi, G; Vetlitsky, I; Viertel, G; Vivargent, M; Volkaert, R; Vogel, H; Vogt, H; Vorobiev, I; Vorobyov, Aa; Vorvolakos, A; Wadhwa, M; Wallraff, W; Wang, Jc; Wang, Xl; Wang, Zm; Weber, A; Wittgenstein, F; Wu, Sx; Wynhoff, S; Xu, J; Xu, Zz; Yang, Bz; Yang, Cg; Yao, Xy; Ye, Jb; Yeh, Sc; You, Jm; Zalite, A; Zalite, Y; Zemp, P; Zeng, Y; Zhang, Z; Zhang, Zp; Zhou, B; Zhu, Gy; Zhu, Ry; Zichichi, A; Ziegler, F.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 404:(1997), pp. 390-402. [10.1016/S0370-2693(97)00647-3]

QCD studies and determination of alpha(s) in e(+)e(-) collisions at root s=161 GeV and 172 GeV

BAGNAIA, Paolo;BARONE, Luciano Maria;FACCINI, Riccardo;FERRONI, Fernando;GENTILE, Simonetta;GIAGU, Stefano;LUCI, Claudio;ORGANTINI G;
1997

Abstract

We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb(-1) collected during the high energy runs of 1996, The distributions of event shape variables and the energy dependence of their mean values are well reproduced by QCD models. From a comparison of the data with resummed O(alpha(s)(2)) QCD calculations, we determine the strong coupling constant at the two energies. Combining this with our earlier measurements we find that the strong coupling constant decreases with increasing energy as expected in QCD. (C) 1997 Published by Elsevier Science B.V.
1997
01 Pubblicazione su rivista::01a Articolo in rivista
QCD studies and determination of alpha(s) in e(+)e(-) collisions at root s=161 GeV and 172 GeV / Acciarri, M; Adriani, O; Aguilarbenitez, M; Ahlen, S; Alcaraz, J; Alemanni, G; Allaby, J; Aloisio, A; Alverson, G; Alviggi, Mg; Ambrosi, G; Anderhub, H; Andreev, Vp; Angelescu, T; Anselmo, F; Arefiev, A; Azemoon, T; Aziz, T; Bagnaia, Paolo; Baksay, L; Banerjee, S; Banerjee, S; Banicz, K; Barczyk, A; Barillere, R; Barone, Luciano Maria; Bartalini, P; Baschirotto, A; Basile, M; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Berdugo, J; Berges, P; Bertucci, B; Betev, Bl; Bhattacharya, S; Biasini, M; Biland, A; Bilei, Gm; Blaising, Jj; Blyth, Sc; Bobbink, Gj; Bock, R; Bohm, A; Boldizsar, L; Borgia, B; Bourilkov, D; Bourquin, M; Braccini, S; Branson, Jg; Brigljevic, V; Brock, Ic; Buffini, A; Buijs, A; Burger, Jd; Burger, Wj; Busenitz, J; Button, A; Cai, Xd; Campanelli, M; Capell, M; Romeo, Gc; Carlino, G; Cartacci, Am; Casaus, J; Castellini, G; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Cesaroni, F; Chamizo, M; Chang, Yh; Chaturvedi, Uk; Chekanov, Sv; Chemarin, M; Chen, A; Chen, G; Chen, Gm; Chen, Hf; Chen, Hs; Chereau, X; Chiefari, G; Chien, Cy; Cifarelli, L; Cindolo, F; Civinini, C; Clare, I; Clare, R; Cohn, Ho; Coignet, G; Colijn, Ap; Colino, N; Commichau, V; Costantini, S; Cotorobai, F; Delacruz, B; Csilling, A; Dai, Ts; Dalessandro, R; Deasmundis, R; Degre, A; Deiters, K; Dellavolpe, D; Denes, P; Denotaristefani, F; Dibitonto, D; Diemoz, M; Vandierendonck, D; Dilodovico, F; Dionisi, C; Dittmar, M; Dominguez, A; Doria, A; Dova, Mt; Duchesneau, D; Duinker, P; Duran, I; Dutta, S; Easo, S; Efremenko, Y; Elmamouni, H; Engler, A; Eppling, Fj; Erne, Fc; Ernenwein, Jp; Extermann, P; Fabre, M; Faccini, Riccardo; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Fenyi, B; Ferguson, T; Ferroni, Fernando; Fesefeldt, H; Fiandrini, E; Field, Jh; Filthaut, F; Fisher, Ph; Fisk, I; Forconi, G; Fredj, L; Freudenreich, K; Furetta, C; Galaktionov, Y; Ganguli, Sn; Garciaabia, P; Gau, Ss; Gentile, Simonetta; Gheordanescu, N; Giagu, Stefano; Goldfarb, S; Goldstein, J; Gong, Zf; Gougas, A; Gratta, G; Gruenewald, Mw; Gupta, Vk; Gurtu, A; Gutay, Lj; Hartmann, B; Hasan, A; Hatzifotiadou, D; Hebbeker, T; Herve, A; Vanhoek, Wc; Hofer, H; Hong, Sj; Hoorani, H; Hou, Sr; Hu, G; Innocente, V; Jenkes, K; Jin, Bn; Jones, Lw; Dejong, P; Josamutuberria, I; Kasser, A; Khan, Ra; Kamrad, D; Kamyshkov, Y; Kapustinsky, Js; Karyotakis, Y; Kaur, M; Kienzlefocacci, Mn; Kim, D; Kim, Dh; Kim, Jk; Kim, Sc; Kim, Yg; Kinnison, Ww; Kirkby, A; Kirkby, D; Kirkby, J; Kiss, D; Kittel, W; Klimentov, A; Konig, Ac; Kopp, A; Korolko, I; Koutsenko, V; Kraemer, Rw; Krenz, W; Kunin, A; Deguevara, Pl; Laktineh, I; Landi, G; Lapoint, C; Lassilaperini, K; Laurikainen, P; Lebeau, M; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Lecoultre, P; Legoff, Jm; Leiste, R; Leonardi, E; Levtchenko, P; Li, C; Lin, Ch; Lin, Wt; Linde, Fl; Lista, L; Liu, Za; Lohmann, W; Longo, E; Lu, W; Lu, Ys; Lubelsmeyer, K; Luci, Claudio; Luckey, D; Luminari, L; Lustermann, W; Ma, Wg; Maity, M; Majumder, G; Malgeri, L; Malinin, A; Mana, C; Mangeol, D; Mangla, S; Marchesini, P; Marin, A; Martin, Jp; Marzano, F; Massaro, Ggg; Mcnally, D; Mcneil, Rr; Mele, S; Merola, L; Meschini, M; Metzger, Wj; Vondermey, M; Mi, Y; Mihul, A; Vanmil, Ajw; Mirabelli, G; Mnich, J; Molnar, P; Monteleoni, B; Moore, R; Morganti, S; Moulik, T; Mount, R; Muller, S; Muheim, F; Muijs, Ajm; Nahn, S; Napolitano, M; Nessitedaldi, F; Newman, H; Niessen, T; Nippe, A; Nisati, A; Nowak, H; Oh, Yd; Opitz, H; Organtini, G; Ostonen, R; Palomares, C; Pandoulas, D; Paoletti, S; Paolucci, P; Park, Hk; Park, Ih; Pascale, G; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, F; Peach, D; Pei, Yj; Pensotti, S; Perretgallix, D; Petersen, B; Petrak, S; Pevsner, A; Piccolo, D; Pieri, M; Pinto, Jc; Piroue, Pa; Pistolesi, E; Plyaskin, V; Pohl, M; Pojidaev, V; Postema, H; Produit, N; Prokofiev, D; Rahalcallot, G; Raja, N; Rancoita, Pg; Rattaggi, M; Raven, G; Razis, P; Read, K; Ren, D; Rescigno, M; Reucroft, S; Vanrhee, T; Riemann, S; Riles, K; Robohm, A; Rodin, J; Roe, Bp; Romero, L; Rosierlees, S; Rosselet, P; Vanrossum, W; Roth, S; Rubio, Ja; Ruschmeier, D; Rykaczewski, H; Salicio, J; Sanchez, E; Sanders, Mp; Sarakinos, Me; Sarkar, S; Sassowsky, M; Schafer, C; Schegelsky, V; Schmidtkaerst, S; Schmitz, D; Schmitz, P; Scholz, N; Schopper, H; Schotanus, Dj; Schwenke, J; Schwering, G; Sciacca, C; Sciarrino, D; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shukla, J; Shumilov, E; Shvorob, A; Siedenburg, T; Son, D; Sopczak, A; Smith, B; Spillantini, P; Steuer, M; Stickland, Dp; Stone, A; Stone, H; Stoyanov, B; Straessner, A; Strauch, K; Sudhakar, K; Sultanov, G; Sun, Lz; Susinno, Gf; Suter, H; Swain, Jd; Tang, Xw; Tauscher, L; Taylor, L; Ting, Scc; Ting, Sm; Tonutti, M; Tonwar, Sc; Toth, J; Tully, C; Tuchscherer, H; Tung, Kl; Uchida, Y; Ulbricht, J; Uwer, U; Valente, E; Vandewalle, Rt; Vesztergombi, G; Vetlitsky, I; Viertel, G; Vivargent, M; Volkaert, R; Vogel, H; Vogt, H; Vorobiev, I; Vorobyov, Aa; Vorvolakos, A; Wadhwa, M; Wallraff, W; Wang, Jc; Wang, Xl; Wang, Zm; Weber, A; Wittgenstein, F; Wu, Sx; Wynhoff, S; Xu, J; Xu, Zz; Yang, Bz; Yang, Cg; Yao, Xy; Ye, Jb; Yeh, Sc; You, Jm; Zalite, A; Zalite, Y; Zemp, P; Zeng, Y; Zhang, Z; Zhang, Zp; Zhou, B; Zhu, Gy; Zhu, Ry; Zichichi, A; Ziegler, F.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 404:(1997), pp. 390-402. [10.1016/S0370-2693(97)00647-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/241720
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