Ερευνητικό υλικό ΕΚΠΑ

Measurements of the Z partial decay width into c(c)over-bar and
multiplicity of charm quarks per b decay

Αγγλικά

The partial decay width R-c of the Z into c (c) over bar quark pair and
the number of charm quarks n(c) per b decay are measured with the DELPHI
detector at LEP 1. Particle identification provides clear DO, D+, D-s(+)
and Lambda(c)(+) signatures. The charm hadron production rate is
measured in each channel by a fit to the scaled energy, impact parameter
information and the invariant mass spectrum. Two measurements of R-c are
presented, from the D*(+) production rate and from the overall charm
counting, including strange charm baryon production, in c (c) over bar
events. The multiplicity n(c), which includes hidden c (c) over bar and
strange charm baryon production, is inferred from the charm counting in
bb events.
The final results are R-c = 0.1665 +/- 0.0095 and n(c) = 1.166 +/-
0.086.

2000

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 Branchini, P
Brenke, T
Brenner, RA
Bruckmann, P and
Brunet, JM
Bugge, L
Buran, T
Burgsmueller, T
Buschbeck,
B
Buschmann, P
Cabrera, S
Caccia, M
Calvi, M and
Camporesi, T
Canale, V
Carena, F
Carroll, L
Caso, C and
Gimenez, MVC
Cattai, A
Cavallo, FR
Chabaud, V and
Charpentier, P
Chaussard, L
Checchia, P
Chelkov, GA and
Chierici, R
Chliapnikov, P
Chochula, P
Chorowicz, V and
Chudoba, J
Cieslik, K
Collins, P
Contri, R
Cortina, E
and Cosme, G
Cossutti, F
Cowell, JH
Crawley, HB and
Crennell, D
Crepe, S
Crosetti, G
Maestro, JC
Czellar, S
and Davenport, M
Da Silva, W
Deghorain, A
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
Erzen, B
and Santo, ME
Falk, E
Fanourakis, G
Fassouliotis, D and
Fayot, J
Feindt, M
Ferrari, P
Ferrer, A
Ferrer-Ribas, E
and Ferro, F
Fichet, S
Firestone, A
Flagmeyer, U
Foeth,
H
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
Gerdyukov, L
Ghodbane, N
Gil, I
Glege, F
Gokieli, R and
Golob, B
Gomez-Ceballos, G
Goncalves, P
Caballero, IG and
Gopal, G
Gron, L
Gorski, M
Gouz, Y
Gracco, V
Grahl,
J
Graziani, E
Green, C
Grimm, HJ
Gris, P
Grosdidier,
G
Grzelak, K
Gunther, M
Guy, J
Hahn, F
Hahn, S and
Haider, S
Hallgren, A
Hamacher, K
Hansen, J
Harris, FJ
and Hedberg, V
Heising, S
Hernandez, JJ
Herquet, P
Herr,
H
Hessing, TL
Heuser, JM
Higon, E
Holmgren, SO
Holt,
PJ
Hoorelbeke, S
Houlden, M
Hrubec, J
Huet, K and
Hughes, GJ
Hultqvist, K
Jackson, JN
Jacobsson, R and
Jalocha, P
Janik, R
Jarlskog, C
Jarlskog, G
Jarry, P and
Jean-Marie, B
Johansson, EK
Jonsson, P
Joram, C
Janik, R
and Jarlskog, C
Jarlskog, G
Jarry, P
Jean-Marie, B and
Jahansson, EK
Jonsson, P
Joram, C
Juillot, P
Kapusta, F
and Karafasoulis, K
Katsanevas, S
Katsoufis, EC
Keranen, R
and Kersevan, BP
Khomenko, BA
Khovanski, NN
Kiiskinen, A and
King, B
Kinvig, A
Kjaer, NJ
Klapp, O
Klein, H
Kluit,
P
Kokkinias, P
Koratzinos, M
Kostioukhine, V and
Kourkoumelis, C
Kouznetsov, O
Kriznic, E
Krstic, P and
Krumstein, Z
Kubinec, P
Kurowska, J
Kurvinen, K
Lamsa,
JW
Lane, DW
Langefeld, P
Lapin, V
Laugier, JP and
Lauhakangas, R
Leder, G
Ledroit, F
Lefebure, V
Leinonen,
L
Leisos, A
Leitner, R
Lemonne, J
Lenzen, G and
Lepeltier, V
Lesiak, T
Lethuillier, M
Libby, J
Liko, D
and Lipniacka, A
Lippi, I
Loerstad, B
Loken, JG
Lopes,
JH
Lopez, JM
Lopez-Fernandez, R
Loukas, D
Lutz, P and
Lyons, L
MacNaughton, J
Mahon, JR
Maio, A
Malek, A and
Malmgren, TGM
Maltezos, S
Malychev, V
Mandl, F
Marco, J
and Marco, R
Marechal, B
Margoni, M
Marin, JC
Mariotti,
C
Markou, A
Martinez-Rivero, C
Martinez-Vidal, F
Garcia,
SMI
Masik, J
Mastroyiannopoulos, N
Matorras, F and
Matteuzzi, C
Matthiae, G
Mazzucato, F
Mazzucato, M
Mc
Cubbin, M
Mc Kay, R
Mc Nulty, R
Mc Pherson, G
Meroni, C
and Meyer, WT
Miagkov, A
Migliore, E
Mirabito, L and
Mitaroff, WA
Mjoernmark, U
Moa, T
Moch, M
Moeller, R and
Moenig, K
Monge, MR
Moreau, X
Morettini, P
Morton, G and
Mueller, U
Muenich, K
Mulders, M
Mulet-Marquis, C and
Muresan, R
Murray, WJ
Muryn, B
Myatt, G
Myklebust, T and
Naraghi, F
Nassiakou, M
Navarria, FL
Navas, S
Nawrocki,
K
Negri, P
Nemecek, S
Neufeld, N
Neumeister, N and
Nicolaidou, R
Nielsen, BS
Nikolenko, M
Nomokonov, V and
Normand, A
Nygren, A
Obraztsov, V
Olshevski, AG
Onofre,
A
Orava, R
Orazi, G
Osterberg, K
Ouraou, A
Paganoni,
M
Paiano, S
Pain, R
Paiva, R
Palacios, J
Palka, H
and Papadopoulou, TD
Papageorgiou, K
Pape, L
Parkes, C and
Parodi, F
Parzefall, U
Passeri, A
Passon, O
Pegoraro, M
and Peralta, L
Pernicka, M
Perrotta, A
Petridou, C and
Petrolini, A
Phillips, HT
Pierre, F
Pimenta, M
Piotto, E
and Podobnik, T
Pol, ME
Polok, G
Poropat, P
Pozdniakov,
V
Privitera, P
Pukhaeva, N
Pullia, A
Radojicic, D and
Ragazzi, S
Rahmani, H
Ratoff, PN
Read, AL
Rebecchi, P
and Redaelli, NG
Regler, M
Reid, D
Reinhardt, R
Renton,
PB
Resvanis, LK
Richard, F
Ridky, J
Rinaudo, G and
Rohne, O
Romero, A
Ronchese, P
Rosenberg, EI
Rosinsky, P
and Roudeau, P
Rovelli, T
Royon, C
Ruhlmann-Kleider, V and
Ruiz, A
Saarikko, H
Sacquin, Y
Sadovsky, A
Sajot, G and
Salt, J
Sampsonidis, D
Sannino, M
Schneider, H and
Schwemling, P
Schwering, B
Schwickerath, U
Schyns, MAE and
Scuri, F
Seager, P
Sedykh, Y
Segar, AM
Sekulin, R and
Shellard, RC
Sheridan, A
Siebel, M
Simard, L
Simonetto,
F
Sisakian, AN
Smadja, G
Smirnova, O
Smith, GR and
Sokolov, A
Sopczak, A
Sosnowski, R
Spassov, T
Spiriti, E
and Sponholz, P
Squarcia, S
Stanescu, C
Stanic, S and
Stevenson, K
Stocchi, A
Strauss, J
Strub, R
Stugu, B and
Szczekowski, M
Szeptycka, M
Tabarelli, T
Tchikilev, O and
Tegenfeldt, F
Terranova, F
Thomas, J
Timmermans, J and
Tinti, N
Tkatchev, LG
Todorova, S
Tomaradze, A
Tome, B
and Tonazzo, A
Tortora, L
Transtromer, G
Treille, D and
Tristram, G
Trochimczuk, M
Troncon, C
Tsirou, A
Turluer,
ML
Tyapkin, IA
Tzamarias, S
Ullaland, O
Uvarov, V and
Valenti, G
Vallazza, E
Vander Velde, C
Van Apeldoorn, GW and
Van Dam, P
Van Doninck, WK
Van Eldik, J
Van Lysebetten, A
and Van Remortel, N
Van Vulpen, I
Vassilopoulos, N
Vegni, G
and Ventura, L
Venus, W
Verbeure, F
Verlato, M and
Vertogradov, LS
Verzi, V
Vilanova, D
Vitale, L
Vlasov, E
and Vodopyanov, AS
Vollmer, C
Voulgaris, G
Vrba, V and
Wahlen, H
Walck, C
Weiser, C
Wicke, D
Wickens, JH and
Wilkinson, GR
Winter, M
Witek, M
Wolf, G
Yi, J and
Yushchenko, O
Zalewska, A
Zalewski, P
Zavrtanik, D and
Zevgolatakos, E
Zimin, NI
Zucchelli, GC
Zumerle, G and
DELPHI Collaboration

The European Physical Journal C - Particles and Fields

Springer-Verlag

12

2

225-241

https://doi.org/10.1007/s1005299000228

10.1007/s1005299000228

https://pergamos.lib.uoa.gr/uoa/dl/object/3052699