Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3054607 65 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189
GeV
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Measurements of on-shell ZZ production are described, using data
collected by DELPHI in 1997 and 1998, at centre-of-mass energies roots =
182.6 GeV and 188.6 GeV, respectively. Results obtained in each of the
final states q (q) over barq (q) over bar, mu (+)mu (-) q (q) over bar
e(+)e(-)q (q) over bar, nu<()over bar>q (q) over bar,
l(+)l(-)l(+)l(-), and nu<()over bar>l(+)l(-) are presented. The
measured cross-sections for on-shell ZZ production via the tree-level
doubly-resonant graphs (NC02) are: sigma (NC02) (182.6 GeV) = 0.38 +/-
0.18 (stat) +/- 0.04 (syst) pb, sigma (NC02) (188.6 GeV) = 0.60+/-0.13
(stat) +/- 0.07 (syst) pb. They are consistent with the Standard Model
expectations of 0.25 and 0.65 pb at each energy. (C) 2001 Published by
Elsevier Science B.V.
Έτος δημοσίευσης:
2001
Συγγραφείς:
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
Ballestrero, A
Bambade, P
Barao, F
Barbiellini, G and
Barbier, R
Bardin, DY
Barker, G
Baroncelli, A
Battaglia,
M
Baubillier, M
Becks, KH
Begalli, M
Behrmann, A and
Beilliere, P
Belokopytov, Y
Benekos, NC
Benvenuti, AC and
Berat, C
Berggren, M
Berntzon, L
Bertrand, D
Besancon, M
and Bilenky, MS
Bizouard, MA
Bloch, D
Blom, HM
Bonesini,
M
Boonekamp, M
Booth, PSL
Borisov, G
Bosio, C and
Botner, O
Boudinov, E
Bouquet, B
Bourdarios, C
Bowcock,
TJV
Boyko, I
Bozovic, I
Bozzo, M
Bracko, M and
Branchini, P
Brenner, RA
Bruckman, P
Brunet, JM
Bugge, L
and Buran, T
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
Charpentier, P 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
Costa, M
and Crawley, HB
Crennell, D
Croix, J
Maestro, JC and
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D'Hondt, J
Dalmau, J
Davenport, M
Da Silva, W
and Della Ricca, G
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De Angelis, A and
De Boer, W
De Clercq, C
De Lotto, B
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De Paula,
L
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Dolbeau, J
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Eigen, G
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and Fassouliotis, D
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and Johansson, EK
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JH
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Zumerle, G
Zupan, M
DELPHI Collaboration
Περιοδικό:
PHYSICS LETTERS B
Εκδότης:
ELSEVIER SCIENCE BV
Τόμος:
497
Αριθμός / τεύχος:
3-4
Σελίδες:
199-213
Επίσημο URL (Εκδότης):
DOI:
10.1016/S0370-2693(00)01346-0
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