Lambda(b) polarization in Z(0) decays at LEP

Abreu, P
Adam, W
Adye, T
Adzic, P
Ajinenko, I and
Albrecht, Z
Alderweireld, T
Alekseev, GD
Alemany, R and
Allmendinger, T
Allport, PP
Almehed, S
Amaldi, U and
Amapane, N
Amato, S
Anassontzis, EG
Andersson, P and
Andreazza, A
Andringa, S
Antilogus, P
Apel, WD
Arnoud, Y
and Asman, B
Augustin, JE
Augustinus, A
Baillon, P and
Bambade, P
Barao, F
Barbiellini, G
Barbier, R
Bardin, DY
and Barker, G
Baroncelli, A
Battaglia, M
Baubillier, M and
Becks, KH
Begalli, M
Behrmann, A
Beilliere, P and
Belokopytov, Y
Benekos, NC
Benvenuti, AC
Berat, C and
Berggren, M
Bertini, D
Bertrand, D
Besancon, M
Bigi, M
and Bilenky, MS
Bizouard, MA
Bloch, D
Blom, HM
Bonesini,
M
Bonivento, W
Boonekamp, M
Booth, PSL
Borgland, AW and
Borisov, G
Bosio, C
Botner, O
Boudinov, E
Bouquet, B and
Bourdarios, C
Bowcock, TJV
Boyko, I
Bozovic, I
Bozzo, M
and Bracko, M
Branchini, P
Brenner, RA
Bruckman, P and
Brunet, JM
Bugge, L
Buran, T
Buschbeck, B
Buschmann, P
and Cabrera, S
Caccia, M
Calvi, M
Camporesi, T
Canale, V
and Carena, F
Carroll, L
Caso, C
Gimenez, MVC
Cattai, A
and Cavallo, FR
Chabaud, V
Charpentier, P
Chaussard, L and
Checchia, P
Chelkov, GA
Chierici, R
Chliapnikov, P and
Chochula, P
Chorowicz, V
Chudoba, J
Cieslik, K
Collins,
P
Contri, R
Cortina, E
Cosme, G
Cossutti, F
Crawley,
HB
Crennell, D
Crepe, S
Crosetti, G
Maestro, JC and
Czellar, S
Davenport, M
Da Silva, W
Della Ricca, G and
Delpierre, P
Demaria, N
De Angelis, A
De Boer, W
De
Clercq, C
De Lotto, B
De Min, A
De Paula, L
Dijkstra, H
and Di Ciaccio, L
Dolbeau, J
Doroba, K
Dracos, M
Drees,
J
Dris, M
Duperrin, A
Durand, JD
Eigen, G
Ekelof, T
and Ekspong, G
Ellert, M
Elsing, M
Engel, JP
Santo, ME
and Fanourakis, G
Fassouliotis, D
Fayot, J
Feindt, M and
Fenyuk, A
Ferrari, P
Ferrer, A
Ferrer-Ribas, E
Ferro, F
and Fichet, S
Firestone, A
Flagmeyer, U
Foeth, H and
Fokitis, E
Fontanelli, F
Franek, B
Frodesen, AG and
Fruhwirth, R
Fulda-Quenzer, F
Fuster, J
Galloni, A and
Gamba, D
Gamblin, S
Gandelman, M
Garcia, C
Gaspar, C and
Gaspar, M
Gasparini, U
Gavillet, P
Gazis, EN
Gele, D and
Ghodbane, N
Gil, I
Glege, F
Gokieli, R
Golob, B and
Gomez-Ceballos, G
Goncalves, P
Caballero, IG
Gopal, G and
Gorn, L
Gouz, Y
Gracco, V
Grahl, J
Graziani, E
Gris,
P
Grosdidier, G
Grzelak, K
Guy, J
Hahn, F
Hahn, S
and Haider, S
Hallgren, A
Hamacher, K
Hansen, J
Harris,
FJ
Hedberg, V
Heising, S
Hernandez, JJ
Herquet, P and
Herr, H
Hessing, TL
Heuser, JM
Higon, E
Holmgren, SO and
Holt, PJ
Hoorelbeke, S
Houlden, M
Hrubec, J
Huber, M and
Huet, K
Hughes, GJ
Hultqvist, K
Jackson, JN
Jacobsson, R
and Jalocha, P
Janik, R
Jarlskog, C
Jarlskog, G
Jarry, P
and Jean-Marie, B
Jeans, D
Johansson, EK
Jonsson, P and
Joram, C
Juillot, P
Jungermann, L
Kapusta, F and
Karafasoulis, K
Katsanevas, S
Katsoufis, EC
Keranen, R and
Kernel, G
Kersevan, BP
Khomenko, BA
Khovanski, NN and
Kiiskinen, A
King, B
Kinvig, A
Kjaer, NJ
Klapp, O and
Klein, H
Kluit, P
Kokkinias, P
Kostioukhine, V and
Kourkoumelis, C
Kouznetsov, O
Krammer, M
Kriznic, E and
Krumstein, Z
Kubinec, P
Kurowska, J
Kurvinen, K
Lamsa,
JW
Lane, DW
Lapin, V
Laugier, JP
Lauhakangas, R and
Leder, G
Ledroit, F
Lefebure, V
Leinonen, L
Leisos, A
and Leitner, R
Lenzen, G
Lepeltier, V
Lesiak, T and
Lethuillier, M
Libby, J
Liebig, W
Liko, D
Lipniacka, A
and Lippi, I
Loerstad, B
Loken, JG
Lopes, JH
Lopez, JM
and Lopez-Fernandez, R
Loukas, D
Lutz, P
Lyons, L and
MacNaughton, J
Mahon, JR
Maio, A
Malek, A
Malmgren, TGM
and Maltezos, S
Malychev, V
Mandl, F
Marco, J
Marco, R
and Marechal, B
Margoni, M
Marin, JC
Mariotti, C
Markou,
A
Martinez-Rivero, C
Martinez-Vidal, F
Garcia, SMI and
Masik, J
Mastroyiannopoulos, N
Matorras, F
Matteuzzi, C and
Matthiae, G
Mazzucato, F
Mazzucato, M
Mc Cubbin, M
Mc
Kay, R
Mc Nulty, R
Mc Pherson, G
Meroni, C
Meyer, WT and
Miagkov, A
Migliore, E
Mirabito, L
Mitaroff, WA and
Mjoernmark, U
Moa, T
Moch, M
Moeller, R
Moenig, K and
Monge, MR
Moreau, X
Morettini, P
Morton, G
Mueller, U
and Muenich, K
Mulders, M
Mulet-Marquis, C
Muresan, R and
Murray, WJ
Muryn, B
Myatt, G
Myklebust, T
Naraghi, F and
Nassiakou, M
Navarria, FL
Navas, S
Nawrocki, K
Negri, P
and Neufeld, N
Nicolaidou, R
Nielsen, BS
Niezurawski, P and
Nikolenko, M
Nomokonov, V
Nygren, A
Obraztsov, V and
Olshevski, AG
Onofre, A
Orava, R
Orazi, G
Osterberg, K
and Ouraou, A
Paganoni, M
Paiano, S
Pain, R
Paiva, R and
Palacios, J
Palka, H
Papadopoulou, TD
Papageorgiou, K and
Pape, L
Parkes, C
Parodi, F
Parzefall, U
Passeri, A and
Passon, O
Pavel, T
Pegoraro, M
Peralta, L
Pernicka, M
and Perrotta, A
Petridou, C
Petrolini, A
Phillips, HT and
Pierre, F
Pimenta, M
Piotto, E
Podobnik, T
Pol, ME and
Polok, G
Poropat, P
Pozdniakov, V
Privitera, P
Pukhaeva,
N
Pullia, A
Radojicic, D
Ragazzi, S
Rahmani, H and
Rames, J
Ratoff, PN
Read, AL
Rebecchi, P
Redaelli, NG
and Regler, M
Rehn, J
Reid, D
Reinhardt, R
Renton, PB
and Resvanis, LK
Richard, F
Ridky, J
Rinaudo, G and
Ripp-Baudot, I
Rohne, O
Romero, A
Ronchese, P
Rosenberg,
EI
Rosinsky, P
Roudeau, P
Rovelli, T
Royon, C and
Ruhlmann-Kleider, V
Ruiz, A
Saarikko, H
Sacquin, Y and
Sadovsky, A
Sajot, G
Salt, J
Sampsonidis, D
Sannino, M
and Schwemling, P
Schwering, B
Schwickerath, U
Scuri, F and
Seager, P
Sedykh, Y
Segar, AM
Seibert, N
Sekulin, R and
Shellard, RC
Siebel, M
Simard, L
Simonetto, F
Sisakian,
AN
Smadja, G
Smirnov, N
Smirnova, O
Smith, GR and
Sopczak, A
Sosnowski, R
Spassov, T
Spiriti, E
Squarcia,
S
Stanescu, C
Stanic, S
Stanitzki, M
Stevenson, K and
Stocchi, A
Strauss, J
Strub, R
Stugu, B
Szczekowski, M
and Szeptycka, M
Tabarelli, T
Taffard, A
Tchikilev, O and
Tegenfeldt, F
Terranova, F
Thomas, J
Timmermans, J and
Tinti, N
Tkatchev, LG
Tobin, M
Todorova, S
Tomaradze, A
and Tome, B
Tonazzo, A
Tortora, L
Tortosa, P and
Transtromer, G
Treille, D
Tristram, G
Trochimczuk, M and
Troncon, C
Turluer, ML
Tyapkin, IA
Tzamarias, S and
Ullaland, O
Uvarov, V
Valenti, G
Vallazza, E
Van Dam, P
and Van den Broeck, W
Van Eldik, J
Van Lysebetten, A
van
Remortel, N
Van Vulpen, I
Vegni, G
Ventura, L
Venus, W
and Verbeure, F
Verlato, M
Vertogradov, LS
Verzi, V and
Vilanova, D
Vitale, L
Vlasov, E
Vodopyanov, AS and
Voulgaris, G
Vrba, V
Wahlen, H
Walck, C
Washbrook, AJ
and Weiser, C
Wicke, D
Wickens, JH
Wilkinson, GR
Winter,
M
Witek, M
Wolf, G
Yi, J
Yushchenko, O
Zalewska, A
and Zalewski, P
Zavrtanik, D
Zevgolatakos, E
Zimin, NI and
Zintchenko, A
Zoller, P
Zucchelli, GC
Zumerle, G
DELPHI
Collaboration

Lambda(b) polarization in Z(0) decays at LEP

Authors: P Abreu Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Bambade, P Barao, F Barbiellini, G Barbier, R Bardin, DY and Barker, G Baroncelli, A Battaglia, M Baubillier, M and Becks, KH Begalli, M Behrmann, A Beilliere, P and Belokopytov, Y Benekos, NC Benvenuti, AC Berat, C and Berggren, M Bertini, D Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M Bonivento, W Boonekamp, M Booth, PSL Borgland, AW and Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Boyko, I Bozovic, I Bozzo, M and Bracko, M Branchini, P Brenner, RA Bruckman, P and Brunet, JM Bugge, L Buran, T Buschbeck, B Buschmann, P and Cabrera, S Caccia, M Calvi, M Camporesi, T Canale, V and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Chabaud, V Charpentier, P Chaussard, L and Checchia, P Chelkov, GA Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC and Czellar, S Davenport, M Da Silva, W Della Ricca, G and Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H and Di Ciaccio, L Dolbeau, J Doroba, K Dracos, M Drees, J Dris, M Duperrin, A Durand, JD Eigen, G Ekelof, T and Ekspong, G Ellert, M Elsing, M Engel, JP Santo, ME and Fanourakis, G Fassouliotis, D Fayot, J Feindt, M and Fenyuk, A Ferrari, P Ferrer, A Ferrer-Ribas, E Ferro, F and Fichet, S Firestone, A Flagmeyer, U Foeth, H and Fokitis, E Fontanelli, F Franek, B Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Fuster, J Galloni, A and Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C and Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D and Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B and Gomez-Ceballos, G Goncalves, P Caballero, IG Gopal, G and Gorn, L Gouz, Y Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K Guy, J Hahn, F Hahn, S and Haider, S Hallgren, A Hamacher, K Hansen, J Harris, FJ Hedberg, V Heising, S Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO and Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huber, M and Huet, K Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P and Joram, C Juillot, P Jungermann, L Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, R and Kernel, G Kersevan, BP Khomenko, BA Khovanski, NN and Kiiskinen, A King, B Kinvig, A Kjaer, NJ Klapp, O and Klein, H Kluit, P Kokkinias, P Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI and Masik, J Mastroyiannopoulos, N Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Meroni, C Meyer, WT and Miagkov, A Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moreau, X Morettini, P Morton, G Mueller, U and Muenich, K Mulders, M Mulet-Marquis, C Muresan, R and Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F and Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P and Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P and Nikolenko, M Nomokonov, V Nygren, A Obraztsov, V and Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K and Ouraou, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Papageorgiou, K and Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A and Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Rebecchi, P Redaelli, NG and Regler, M Rehn, J Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR and Sopczak, A Sosnowski, R Spassov, T Spiriti, E Squarcia, S Stanescu, C Stanic, S Stanitzki, M Stevenson, K and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Taffard, A Tchikilev, O and Tegenfeldt, F Terranova, F Thomas, J Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A and Tome, B Tonazzo, A Tortora, L Tortosa, P and Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tzamarias, S and Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P and Van den Broeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verlato, M Vertogradov, LS Verzi, V and Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Walck, C Washbrook, AJ and Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI and Zintchenko, A Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Publication date: 1 January 2000
Publisher

Abstract

The longitudinal polarization of the Lambda(b) baryon is measured at the LEP e(+)e(-) collider by DELPHI. It is determined from the charged lepton and neutrino energy spectra in 249 +/- 19 Lambda(b) semileptonic decays reconstructed in approximate to 3.5 million hadronic Z(0) decays using Lambda(0)-lepton correlations. The measured polarization is: P-Lambda b = -0.49(-0.30)(+0.32)(stat.) +/- 0.17(syst.). (C) Elsevier Science B.V. All rights reserved

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