Guy Wilkinson: Publications

Search for low mass Higgs bosons produced in Z0 decays

Zeitschrift Fur Physik C Particles and Fields 51:1 (1991) 25-35

Authors:

P Abreu, W Adam, F Adami, T Adye, T Akesson, GD Alekseev, P Allen, S Almehed, F Alted, SJ Alvsvaag, U Amaldi, E Anassontzis, P Antilougus, WD Apel, B Asman, P Astier, JE Augustin, A Augustinus, P Baillon, P Bambade, F Barao, G Barbiellini, DY Bardin, A Baroncelli, O Barring, W Bartl, MJ Bates, M Baubillier, KH Becks, CJ Beeston, M Begalli, P Beilliere, I Belokopytov, K Belous, P Beltran, D Benedic, JM Benlloch, M Berggren, D Bertrand, S Biagi, F Bianchi, JH Bibby, MS Bilenky, P Billoir, J Bjarne, D Bloch, PN Bogolubov, T Bolognese, M Bonapart, M Bonesini, PSL Booth, M Boratav, P Borgeaud, H Borner, C Bosio, O Botner, B Bonquet, M Bozzo, S Braibant, P Branchini, KD Brand, RA Brenner, C Bricman, RCA Brown, N Brummer, JM Brunet, L Bugge, T Buran, H Burmeister, JAMA Buytaert, M Caccia, M Calvi, AJ Camacho Rozas, JE Campagne, A Campion, T Camporesi, V Canale, F Cao, L Carroll, C Caso, E Castelli, MV Castillo Gimenez, A Cattai, FR Cavallo, L Cerrito, P Charpentier, P Checchia, GA Chelkov, L Chevalier, P Chliapnikov, V Chorowicz, R Cirio, MP Clara, JL Contreras, R Contri, G Cosme, F Couchot, HB Crawley, D Crennell, G Crosetti

Abstract:

A search for light Higgs bosons was performed using the data sample collected in 1990 by the DELPHI detector at LEP, at centre of mass energies between 88.2 and 94.2 GeV. Using the process e⁺e^-→H⁰+Z^0*, Z^0*→ff, it is possible to exclude the existence of the standard model Higgs particle with a mass between 0 and 210 MeV/c² at the 99% confidence level. Extending this analysis to the minimal supersymmetric standard model restricts the lightest neutral Higgs boson to masses above 28 GeV/c² irrespective of the value of the mixing angle. © 1991 Springer-Verlag.

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Experimental study of the triple-gluon vertex

Physics Letters B 255:3 (1991) 466-476

Authors:

P Abreu, W Adam, F Adami, T Adye, T Akesson, GD Alekseev, P Allen, S Almehed, F Alted, SJ Alvsvaag, U Amaldi, E Anassontzis, WD Apel, B Asman, P Astier, JE Augustin, A Augustinus, P Baillon, P Bambade, F Bara, G Barbiellini, DY Bardin, A Baroncelli, O Barring, W Bartl, MJ Bates, M Baubillier, KH Becks, CJ Beeston, M Begalli, P Beilliere, I Belokopytov, P Beltran, D Benedic, JM Benlloch, M Berggren, D Bertrand, S Biagi, F Bianchi, JH Bibby, MS Bilenky, P Billoir, J Bjarne, D Bloch, PN Bogolubov, D Bollini, T Bolognese, M Bonapart, M Bonesini, PSL Booth, M Boratav, P Borgeaud, H Borner, C Bosio, O Botner, B Bouquet, M Bozzo, S Braibant, P Branchini, KD Brand, RA Brenner, C Bricman, RCA Brown, N Brummer, JM Brunet, L Bugge, T Buran, H Burmeister, JAMA Buytaert, M Caccia, M Calvi, AJC Rozas, JE Campagne, A Campion, T Camporesi, V Canale, F Cao, L Carroll, C Caso, E Castelli, MVC Gimenez, A Cattai, FR Cavallo, L Cerritp, P Charpentier, P Checchia, GA Chelkov, L Chevalier, P Chliapnikov, V Chorowicz, R Cirio, MP Clara, JL Contreras, R Contri, G Cosme, F Couchot, HB Crawley, D Crennell, G Crosetti, N Crosland

Abstract:

In four-jet events from e+e- →Z0 →multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle θNR* and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor Nc to the fermionic Casimir operator CF: Nc CF= 2.55 ± 0.55 (stat.) ± 0.4 (fragm. + models) ± 0.2 (error in bias) in agreement with the value 2.25 expected in QCD from Nc=3 and CF= 4 3. © 1991.

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DETERMINATION OF Z0 RESONANCE PARAMETERS AND COUPLINGS FROM ITS HADRONIC AND LEPTONIC DECAYS

NUCLEAR PHYSICS B 367:3 (1991) 511-574

Authors:

P ABREU, W ADAM, F ADAMI, T ADYE, T AKESSON, GD ALEKSEEV, P ALLEN, S ALMEHED, F ALTED, SJ ALVSVAAG, U AMALDI, E ANASSONTZIS, P ANTILOGUS, WD APEL, RJ APSIMON, B ASMAN, P ASTIER, JE AUGUSTIN, A AUGUSTINUS, P BAILLON, P BAMBADE, F BARAO, G BARBIELLINI, DY BARDIN, A BARONCELLI, O BARRING, W BARTL, M BATTAGLIA, MJ BATES, M BAUBILLIER, KH BECKS, CJ BEESTON, M BEGALLI, P BEILLIERE, Y BELOKOPYTOV, P BELTRAN, D BENEDIC, JM BENLLOCH, M BERGGREN, D BERTRAND, S BIAGI, F BIANCHI, JH BIBBY, MS BILENKY, P BILLOIR, J BJARNE, D BLOCH, S BLYTH, PN BOGOLUBOV, T BOLOGNESE, M BONAPART, M BONESINI, W BONIVENTO, PSL BOOTH, M BORATAV, P BORGEAUD, G BORISOV, H BORNER, C BOSIO, O BOTNER, B BOUQUET, M BOZZO, S BRAIBANT, P BRANCHINI, KD BRAND, RA BRENNER, C BRICMAN, RCA BROWN, N BRUMMER, JM BRUNET, L BUGGE, T BURAN, H BURMEISTER, JAMA BUYTAERT, M CACCIA, M CALVI, AJC ROZAS, JE CAMPAGNE, A CAMPION, T CAMPORESI, V CANALE, F CAO, L CARROLL, C CASO, E CASTELLI, MVC GIMENEZ, A CATTAI, FR CAVALLO, L CERRITO, M CHAPKIN, P CHARPENTIER, P CHECCHIA, GA CHELKOV, L CHEVALIER, P CHLIAPNIKOV, V CHOROWICZ, R CIRIO, MP CLARA, P COLLINS, JL CONTRERAS, R CONTRI, G COSME, F COUCHOT, HB CRAWLEY, D CRENNELL, G CROSETTI, N CROSLAND, M CROZON, JC MAESTRO, S CZELLAR, S DAGORET, E DAHLJENSEN, B DALMAGNE, M DAM, G DAMGAARD, G DARBO, E DAUBIE, PD DAUNCEY, M DAVENPORT, P DAVID, A DEANGELIS, M DEBEER, H DEBOECK, W DEBOER, C DECLERCQ, MDMD LASO, N DEGROOT, C DELAVAISSIERE, B DELOTTO, A DEMIN, C DEFOIX, D DELIKARIS, S DELORME, P DELPIERRE, N DEMARIA, J DERKAOUI, L DICIACCIO, H DIJKSTRA, F DJAMA, J DOLBEAU, M DONSZELMANN, K DOROBA, M DRACOS, J DREES, M DRIS, Y DUFOUR, W DULINSKI, R DZHELYADIN, LO EEK, PAM EEROLA, T EKELOF, G EKSPONG, AE PEISERT, JP ENGEL, D FASSOULIOTIS, MF ALONSO, A FERRER, TA FILIPPAS, A FIRESTONE, H FOETH, E FOKITIS, P FOLEGATI, F FONTANELLI, H FORSBACH, B FRANEK, P FRENKIEL, DC FRIES, AG FRODESEN, R FRUHWIRTH, F FULDAQUENZER, K FURNIVAL, H FURSTENAU, J FUSTER, JM GAGO, G GALEAZZI, D GAMBA, C GARCIA, J GARCIA, U GASPARINI, P GAVILLET, EN GAZIS, JP GERBER, P GIACOMELLI, KW GLITZA, R GOKIELI, VM GOLOVATYUK, JJGY CADENAS, A GOOBAR, G GOPAL, M GORSKI, V GRACCO, A GRANT, F GRARD, E GRAZIANI, MH GROS, G GROSDIDIER, B GROSSETETE, S GUMENYUK, J GUY, F HAHN, M HAHN, S HAIDER, Z HAJDUK, A HAKANSSON, A HALLGREN, K HAMACHER, GH DEMONCHENAULT, FJ HARRIS, BW HECK, I HERBST, JJ HERNANDEZ, P HERQUET, H HERR, I HIETANEN, E HIGON, HJ HILKE, SD HODGSON, T HOFMOKL, R HOLMES, SO HOLMGREN, D HOLTHUIZEN, PF HONORE, JE HOOPER, M HOULDEN, J HRUBEC, PO HULTH, K HULTQVIST, D HUSSON, BD HYAMS, P IOANNOU, D ISENHOWER, PS IVERSEN, JN JACKSON, P JALOCHA, G JARLSKOG, P JARRY, B JEANMARIE, EK JOHANSSON, D JOHNSON, M JONKER, L JONSSON, P JUILLOT, G KALKANIS, G KALMUS, G KANTARDJIAN, F KAPUSTA, S KATSANEVAS, EC KATSOUFIS, R KERANEN, J KESTEMAN, BA KHOMENKO, NN KHOVANSKI, B KING, NJ KJAER, H KLEIN, W KLEMPT, A KLOVNING, P KLUIT, JH KOEHNE, B KOENE, P KOKKINIAS, M KOPF, M KORATZINOS, K KORCYL, AV KORYTOV, B KORZEN, V KOSTUKHIN, C KOURKOUMELIS, T KREUZBERGER, J KROLIKOWSKI, U KRUENERMARQUIS, W KRUPINSKI, W KUCEWICZ, K KULKA, K KURVINEN, C LACASTA, C LAMBROPOULOS, JW LAMSA, L LANCERI, V LAPIN, JP LAUGIER, R LAUHAKANGAS, G LEDER, F LEDROIT, J LEMONNE, G LENZEN, V LEPELTIER, A LETESSIERSELVON, D LIKO, E LIEB, E LILLETHUN, J LINDGREN, A LIPNIACKA, I LIPPI, R LLOSA, B LOERSTAD, M LOKAJICEK, JG LOKEN, MAL AGUERA, A LOPEZFERNANDEZ, M LOS, D LOUKAS, A LOUNIS, JJ LOZANO, R LUCOCK, P LUTZ, L LYONS, G MAEHLUM, J MAILLARD, A MALTEZOS, S MALTEZOS, F MANDL, J MARCO, M MARGONI, JC MARIN, A MARKOU, S MARTI, L MATHIS, F MATORRAS, C MATTEUZZI, G MATTHIAE, M MAZZUCATO, M MCCUBBIN, R MCKAY, R MCNULTY, E MENICHETTI, G MEOLA, C MERONI, WT MEYER, M MICHELOTTO, WA MITAROFF, GV MITSELMAKHER, U MJOERNMARK, T MOA, R MOELLER, K MOENIG, MR MONGE, P MORETTINI, H MUELLER, H MULLER, WJ MURRAY, G MUYATT, F NARAGHI, U NAUKORZEN, FL NAVARRIA, P NEGRI, BS NIELSEN, B NIJJHAR, V NIKOLAENKO, V OBRAZTSOV, AG OLSHEVSKI, R ORAVA, A OSTANKOV, A OURAOU, R PAIN, H PALKA, T PAPADOPOULOU, L PAPE, A PASSERI, M PEGORARO, V PEREVOZCHIKOV, M PERNICKA, A PERROTTA, F PIERRE, M PIMENTA, O PINGOT, A PINSENT, ME POL, G POLOK, P POROPAT, P PRIVITERA, A PULLIA, J PYYHTIA, D RADOJICIC, S RAGAZZI, WH RANGE, PN RATOFF, AL READ, NG REDAELLI, M REGLER, D REID, PB RENTON, LK RESVANIS, F RICHARD, M RICHARDSON, J RIDKY, G RINAUDO, I RODITI, A ROMERO, I RONCAGLIOLO, P RONCHESE, C RONNQVIST, EI ROSENBERG, U ROSSI, E ROSSO, P ROUDEAU, T ROVELLI, W RUCKSTUHL, V RUHLMANN, A RUIZ, K RYBICKI, H SAARIKKO, Y SACQUIN, J SALT, E SANCHEZ, J SANCHEZ, M SANNINO, M SCHAEFFER, S SCHAEL, H SCHNEIDER, F SCURI, AM SEGAR, R SEKULIN, M SESSA, G SETTE, R SEUFERT, RC SHELLARD, P SIEGRIST, S SIMONETTI, F SIMONETTO, AN SISSAKIAN, TB SKAALI, G SKJEVLING, G SMADJA, GR SMITH, N SMIRNOV, R SOSNOWSKI, TS SPASSOFF, E SPIRITI, S SQUARCIA, H STAECK, C STANESCU, G STAVROPOULOS, F STICHELBAUT, A STOCCHI, J STRAUSS, R STRUB, CJ STUBENRAUCH, M SZCZEKOWSKI, M SZEPTYCKA, P SZYMANSKI, T TABARELLI, S TAVERNIER, O TCHIKILEV, GE THEODOSIOU, A TILQUIN, J TIMMERMANS, VG TIMOFEEV, LG TKATCHEV, T TODOROV, DZ TOET, L TORTORA, MT TRAINOR, D TREILLE, U TREVISAN, W TRISCHUK, G TRISTRAM, C TRONCON, A TSIROU, EN TSYGANOV, M TURALA, R TURCHETTA, ML TURLUER, T TUUVA, IA TYAPKIN, M TYNDEL, S TZAMARIAS, B UEBERSCHAER, S UEBERSCHAER, O ULLALAND, VA UVAROV, G VALENTI, E VALLAZZA, JAV FERRER, GW VANAPELDOORN, P VANDAM, WK VANDONINCK, N VANEIJNDHOVEN, C VANDERVELDE, J VARELA, P VAZ, G VEGNI, J VELASCO, L VENTURA, W VENUS, F VERBEURE, LS VERTOGRADOV, L VIBERT, D VILANOVA, EV VLASOV, AS VODOPYANOV, M VOLLMER, S VOLPONI, G VOULGARIS, M VOUTILAINEN, V VRBA, H WAHLEN, C WALCK, F WALDNER, M WAYNE, P WEILHAMMER, J WERNER, AM WETHERELL, JH WICKENS, J WIKNE, GR WILKINSON, WSC WILLIAMS, M WINTER, D WORMALD, G WORMSER, K WOSCHNAGG, N YAMDAGNI, P YEPES, A ZAITSEV, A ZALEWSKA, P ZALEWSKI, E ZEVGOLATAKOS, G ZHANG, NI ZIMIN, M ZITO, R ZITOUN, RZ FUNCHAL, G ZUMERLE, J ZUNIGA

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THE REACTION E+E--] GAMMA-GAMMA(GAMMA) AT Z0 ENERGIES

PHYSICS LETTERS B 268:2 (1991) 296-304

Authors:

P ABREU, W ADAM, F ADAMI, T ADYE, T AKESSON, GD ALEKSEEV, P ALLEN, S ALMEHED, F ALTED, SJ ALVSVAAG, U AMALDI, E ANASSONTZIS, P ANTILOGUS, WD APEL, RJ APSIMON, B ASMAN, P ASTIER, JE AUGUSTIN, A AUGUSTINUS, P BAILLON, P BAMBADE, F BARAO, G BARBIELLINI, DY BARDIN, A BARONCELLI, O BARRING, W BARTL, M BATTAGLIA, MJ BATES, M BAUBILLIER, KH BECKS, CJ BEESTON, M BEGALLI, P BEILLIERE, Y BELOKOPYTOV, P BELTRAN, D BENEDIC, JM BENLLOCH, M BERGGREN, D BERTRAND, S BIAGI, F BIANCHI, JH BIBBY, MS BILENKY, P BILLOIR, J BJARNE, D BLOCH, S BLYTH, PN BOGOLUBOV, T BOLOGNESE, M BONAPART, M BONESINI, W BONIVENTO, PSL BOOTH, M BORATAV, P BORGEAUD, G BORISOV, H BORNER, C BOSIO, O BOTNER, B BOUQUET, M BOZZO, S BRAIBANT, P BRANCHINI, KD BRAND, RA BRENNER, C BRICMAN, RCA BROWN, N BRUMMER, JM BRUNET, L BUGGE, T BURAN, H BURMEISTER, JAMA BUYTAERT, M CACCIA, M CALVI, AJC ROZAS, JE CAMPAGNE, A CAMPION, T CAMPORESI, V CANALE, F CAO, L CARROLL, C CASO, E CASTELLI, MVC GIMENEZ, A CATTAI, FR CAVALLO, L CERRITO, P CHARPENTIER, P CHECCHIA, GA CHELKOV, L CHEVALIER, P CHLIAPNIKOV, V CHOROWICZ, R CIRIO, MP CLARA, P COLLINS, JL CONTRERAS, R CONTRI, G COSME, F COUCHOT, HB CRAWLEY, D CRENNELL, G CROSETTI, N CROSLAND, M CROZON, JC MAESTRO, S CZELLAR, S DAGORET, E DAHLJENSEN, B DALMAGNE, M DAM, G DAMGAARD, G DARBO, E DAUBIE, PD DAUNCEY, M DAVENPORT, P DAVID, A DEANGELIS, M DEBEER, H DEBOECK, W DEBOER, C DECLERCQ, MDMD LASO, N DEGROOT, C DELAVAISSIERE, B DELOTTO, A DEMIN, C DEFOIX, D DELIKARIS, S DELORME, P DELPIERRE, N DEMARIA, J DERKAOUI, L DICIACCIO, H DIJKSTRA, F DJAMA, J DOLBEAU, M DONSZELMANN, K DOROBA, M DRACOS, J DREES, M DRIS, Y DUFOUR, W DULINSKI, R DZHELYADIN, LO EEK, PAM EEROLA, T EKELOF, G EKSPONG, AE PEISERT, JP ENGEL, D FASSOULIOTIS, A FENYUK, MF ALONSO, A FERRER, TA FILIPPAS, A FIRESTONE, H FOETH, E FOKITIS, P FOLEGATI, F FONTANELLI, H FORSBACH, B FRANEK, P FRENKIEL, DC FRIES, AG FRODESEN, R FRUHWIRTH, F FULDAQUENZER, K FURNIVAL, H FURSTENAU, J FUSTER, JM GAGO, G GALEAZZI, D GAMBA, C GARCIA, J GARCIA, U GASPARINI, P GAVILLET, EN GAZIS, JP GERBER, P GIACOMELLI, KW GLITZA, R GOKIELI, VM GOLOVATYUK, JJGY CADENAS, A GOOBAR, G GOPAL, M GORSKI, V GRACCO, A GRANT, F GRARD, E GRAZIANI, MH GROS, G GROSDIDIER, B GROSSETETE, S GUMENYUK, J GUY, F HAHN, M HAHN, S HAIDER, Z HAJDUK, A HAKANSSON, A HALLGREN, K HAMACHER, GH DEMONCHENAULT, FJ HARRIS, BW HECK, I HERBST, JJ HERNANDEZ, P HERQUET, H HERR, I HIETANEN, E HIGON, HJ HILKE, SD HODGSON, T HOFMOKL, R HOLMES, SO HOLMGREN, D HOLTHUIZEN, PF HONORE, JE HOOPER, M HOULDEN, J HRUBEC, PO HULTH, K HULTQVIST, D HUSSON, BD HYAMS, P IOANNOU, D ISENHOWER, PS IVERSEN, JN JACKSON, P JALOCHA, G JARLSKOG, P JARRY, B JEANMARIE, EK JOHANSSON, D JOHNSON, M JONKER, L JONSSON, P JUILLOT, G KALKANIS, G KALMUS, G KANTARDJIAN, F KAPUSTA, A KATARGIN, S KATSANEVAS, EC KATSOUFIS, R KERANEN, J KESTEMAN, BA KHOMENKO, NN KHOVANSKI, B KING, NJ KJAER, H KLEIN, W KLEMPT, A KLOVNING, P KLUIT, JH KOEHNE, B KOENE, P KOKKINIAS, M KOPF, M KORATZINOS, K KORCYL, AV KORYTOV, B KORZEN, V KOSTUKHIN, C KOURKOUMELIS, T KREUZBERGER, J KROLIKOWSKI, U KRUENERMARQUIS, W KRUPINSKI, W KUCEWICZ, K KURVINEN, C LACASTA, C LAMBROPOULOS, JW LAMSA, L LANCERI, V LAPIN, JP LAUGIER, R LAUHAKANGAS, G LEDER, F LEDROIT, J LEMONNE, G LENZEN, V LEPELTIER, A LETESSIERSELVON, D LIKO, E LIEB, E LILLETHUN, J LINDGREN, A LIPNIACKA, I LIPPI, R LLOSA, B LOERSTAD, M LOKAJICEK, JG LOKEN, MAL AGUERA, A LOPEZFERNANDEZ, M LOS, D LOUKAS, A LOUNIS, JJ LOZANO, R LUCOCK, P LUTZ, L LYONS, G MAEHLUM, J MAILLARD, A MALTEZOS, S MALTEZOS, F MANDL, J MARCO, M MARGONI, JC MARIN, A MARKOU, S MARTI, L MATHIS, F MATORRAS, C MATTEUZZI, G MATTHIAE, M MAZZUCATO, M MCCUBBIN, R MCKAY, R MCNULTY, E MENICHETTI, C MERONI, WT MEYER, M MICHELOTTO, WA MITAROFF, GV MITSELMAKHER, U MJOERNMARK, T MOA, R MOELLER, K MOENIG, MR MONGE, P MORETTINI, H MUELLER, H MULLER, WJ MURRAY, G MYATT, F NARAGHI, U NAUKORZEN, FL NAVARRIA, P NEGRI, BS NIELSEN, B NIJJHAR, V NIKOLAENKO, V OBRAZTSOV, AG OLSHEVSKI, R ORAVA, A OSTANKOV, A OURAOU, R PAIN, H PALKA, T PAPADOPOULOU, L PAPE, A PASSERI, M PEGORARO, V PEREVOZCHIKOV, M PERNICKA, A PERROTTA, F PIERRE, M PIMENTA, O PINGOT, A PINSENT, ME POL, G POLOK, P POROPAT, P PRIVITERA, A PULLIA, J PYYHTIA, D RADOJICIC, S RAGAZZI, WH RANGE, PN RATOFF, AL READ, NG REDAELLI, M REGLER, D REID, PB RENTON, LK RESVANIS, F RICHARD, M RICHARDSON, J RIDKY, G RINAUDO, I RODITI, A ROMERO, I RONCAGLIOLO, P RONCHESE, C RONNQVIST, EI ROSENBERG, U ROSSI, E ROSSO, P ROUDEAU, T ROVELLI, W RUCKSTUHL, V RUHLMANN, A RUIZ, K RYBICKI, H SAARIKKO, Y SACQUIN, J SALT, E SANCHEZ, J SANCHEZ, M SANNINO, M SCHAEFFER, S SCHAEL, H SCHNEIDER, F SCURI, AM SEGAR, R SEKULIN, M SESSA, G SETTE, R SEUFERT, RC SHELLARD, P SIEGRIST, S SIMONETTI, F SIMONETTO, AN SISSAKIAN, TB SKAALI, G SKJEVLING, G SMADJA, GR SMITH, R SOSNOWSKI, TS SPASSOFF, E SPIRITI, S SQUARCIA, H STAECK, C STANESCU, G STAVROPOULOS, F STICHELBAUT, A STOCCHI, J STRAUSS, R STRUB, CJ STUBENRAUCH, M SZCZEKOWSKI, M SZEPTYCKA, P SZYMANSKI, T TABARELLI, S TAVERNIER, GE THEODOSIOU, A TILQUIN, J TIMMERMANS, VG TIMOFEEV, LG TKATCHEV, T TODOROV, DZ TOET, L TORTORA, MT TRAINOR, D TREILLE, U TREVISAN, W TRISCHUK, G TRISTRAM, C TRONCON, A TSIROU, EN TSYGANOV, M TURALA, R TURCHETTA, ML TURLUER, T TUUVA, IA TYAPKIN, M TYNDEL, S TZAMARIAS, B UEBERSCHAER, S UEBERSCHAER, O ULLALAND, VA UVAROV, G VALENTI, E VALLAZZA, JAV FERRER, GW VANAPELDOORN, P VANDAM, WK VANDONINCK, N VANEIJNDHOVEN, C VANDERVELDE, J VARELA, P VAZ, G VEGNI, J VELASCO, L VENTURA, W VENUS, F VERBEURE, LS VERTOGRADOV, L VIBERT, D VILANOVA, EV VLASOV, AS VODOPYANOV, M VOLLMER, S VOLPONI, G VOULGARIS, M VOUTILAINEN, V VRBA, H WAHLEN, C WALCK, F WALDNER, M WAYNE, P WEILHAMMER, J WERNER, AM WETHERELL, JH WICKENS, J WIKNE, GR WILKINSON, WSC WILLIAMS, M WINTER, D WORMALD, G WORMSER, K WOSCHNAGG, N YAMDAGNI, P YEPES, A ZAITSEV, A ZALEWSKA, P ZALEWSKI, E ZEVGOLATAKOS, G ZHANG, NI ZIMIN, M ZITO, R ZITOUN, RZ FUNCHAL, G ZUMERLE, J ZUNIGA

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Energy-energy correlations in hadronic final states from Z⁰ decays

Physics Letters B 252:1 (1990) 149-158

Authors:

P Abreu, W Adam, F Adami, T Ayde, GD Alekseev, P Allen, S Almehed, F Alted, SJ Alvsvaag, U Amaldi, E Anassontzis, WD Apel, B Asman, P Astier, JE Augustinus, A Augustinus, P Baillon, P Bambade, F Barao, G Barbiellini, DY Bardin, A Baroncelli, O Barring, W Bartl, MJ Bates, M Baubillier, KH Becks, CJ Beeston, P Beilliere, I Belokopytov, P Beltran, D Benedic, JM Benlloch, M Berggren, D Bertrand, S Biagi, F Bianchi, JH Bibby, MS Bilenky, P Billoir, J Biarne, D Bloch, PN Bogolubov, D Bollini, T Bolognese, M Bonapart, M Bonesini, PSL Booth, M Boratav, P Borgeaud, H Borner, C Bosio, O Botner, B Bouquet, M Bozzo, S Braibant, P Branchini, KD Brand, RA Brenner, C Bricman, RCA Brown, N Brummer, JM Brunet, L Bugge, T Buran, H Burmeister, JAMA Buytaert, M Caccia, M Calvi, AJ Camacho Rozas, JE Campagne, A Campion, T Camporesi, V Canale, F Cao, L Carroll, C Caso, E Castelli, MV Castillo Gimenez, A Cattai, FR Cavallo, L Cerrito, P Charpentier, P Checchia, GA Chelkov, L Chevalier, P Chliapnikov, V Chorowicz, R Cirio, MP Clara, JL Contreras, R Contri, G Cosme, F Couchot, HB Crawley, D Crennell, M Cresti, G Crosetti, N Crosland, M Crozon

Abstract:

We have studied the energy-energy angular correlations in hadronic final states from Z0 decay using the DELPHI detector at LEP. From a comparison with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation we find that Λ (5) MS=104+25-20(stat.)+25-20(syst.) +3000)theor.). MeV, which corresponds to αs(91 GeV)=0.106±0.003(stat.)±0.003(syst.)+0.003 -0.000(theor). The theoretical error stems from different choices for the renormalization scale of αs. In the Monte Carlo simulation the scale of αs as well as the fragmentation parameters have been optimized to described reasonably well all aspects of multihadron production. © 1990.

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Guy Wilkinson

Sub department

Search for low mass Higgs bosons produced in Z0 decays

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Experimental study of the triple-gluon vertex

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DETERMINATION OF Z0 RESONANCE PARAMETERS AND COUPLINGS FROM ITS HADRONIC AND LEPTONIC DECAYS

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THE REACTION E+E--] GAMMA-GAMMA(GAMMA) AT Z0 ENERGIES

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Energy-energy correlations in hadronic final states from Z⁰ decays

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Guy Wilkinson

Sub department

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Search for low mass Higgs bosons produced in Z0 decays

Authors:

Abstract:

Experimental study of the triple-gluon vertex

Authors:

Abstract:

DETERMINATION OF Z0 RESONANCE PARAMETERS AND COUPLINGS FROM ITS HADRONIC AND LEPTONIC DECAYS

Authors:

THE REACTION E+E--] GAMMA-GAMMA(GAMMA) AT Z0 ENERGIES

Authors:

Energy-energy correlations in hadronic final states from Z0 decays

Authors:

Abstract:

Energy-energy correlations in hadronic final states from Z⁰ decays