Measurement of the inclusive charmless and double-charm B branching ratios

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3050409 52 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Measurement of the inclusive charmless and double-charm B branching
ratios
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The DELPHI experiment at LEP has measured the inclusive charmless B
hadron decay branching ratio, the B branching ratio into two charmed
particles, and the total number of charmed particles per B decay, using
the hadronic Z data taken between 1992 and 1995. The results are
extracted from a fit to the b-tagging probability distribution based on
the precise impact parameter measurements made using the microvertex
detector. The inclusive charmless B branching ratio, including B decays
into hidden charm (c (c) over bar), is measured to be 0.033 +/- 0.021.
The B branching ratio into two open charmed particles is 0.136 +/-
0.042. The mean number of charmed particles per B decay (including
hidden charm) is 1.147 +/- 0.041. After subtracting the B decay
branching ratio into hidden charm, the charmless B branching ratio is
found to be 0.007 +/- 0.021, compatible with the Standard Model
expectation. Models that predict an additional contribution to the
charmless B branching ratio of 0.037 or higher are excluded with at
least 95% confidence. (C) 1998 Elsevier Science B.V. All rights
reserved.
Έτος δημοσίευσης:
1998
Συγγραφείς:
Abreu, P
Adam, W
Adye, T
Adzic, P
Alekseev, GD and
Alemany, P
Allport, PP
Almehed, S
Amaldi, U
Amato, S and
Andersson, P
Andreazza, A
Antilogus, P
Apel, WD
Arnoud,
Y
Asman, B
Augustin, JE
Augustinus, A
Baillon, P and
Bambade, P
Barao, F
Barbier, R
Bardin, DY
Barker, G and
Baroncelli, A
Barring, O
Bates, MJ
Battaglia, M and
Baubillier, M
Becks, KH
Begalli, M
Beilliere, P and
Belokopytov, Y
Belous, K
Benvenuti, AC
Berat, C and
Berggren, M
Bertini, D
Bertrand, D
Besancon, M
Bianchi,
F
Bigi, M
Bilenky, MS
Billoir, P
Bizouard, MA
Bloch,
D
Bonesini, M
Bonivento, W
Boonekamp, M
Booth, PSL and
Borgland, AW
Borisov, G
Bosio, C
Botner, O
Boudinov, E
and Bouquet, B
Bourdarios, C
Bowcock, TJV
Bozovic, I and
Bozzo, M
Branchini, P
Brand, KD
Brenke, T
Brenner, RA
and Brown, R
Bruckman, P
Brunet, JM
Bugge, L
Buran, T
and Burgsmueller, T
Buschmann, P
Cabrera, S
Caccia, M and
Calvi, M
Rozas, AJC
Camporesi, T
Canale, V
Canepa, M and
Carena, F
Carroll, L
Caso, C
Gimenez, MVC
Cattai, A and
Cavallo, FR
Cerruti, C
Chabaud, V
Chapkin, M and
Charpentier, P
Chaussard, L
Checchia, P
Chelkov, GA and
Chen, M
Chierici, R
Chliapnikov, P
Chochula, P and
Chorowicz, V
Chudoba, J
Collins, P
Colomer, M
Contri, R
and Cortina, E
Cosme, G
Cossutti, F
Cowell, JH
Crawley,
HB
Crennell, D
Crosetti, G
Maestro, JC
Czellar, S and
Dalmagne, B
Damgaard, G
Dauncey, PD
Davenport, M
Da
Silva, W
Deghorain, A
Della Ricca, G
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Demaria, N
De Angelis, A
De Boer, W
De Brabandere, S
De
Clercq, C
De la Vaissiere, C
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De
Paula, L
Dijkstra, H
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Dolbeau, J
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and Gerdyukov, L
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and Grosdidier, G
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and Hahn, S
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and Keranen, R
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Lemonne, J
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and Lethuillier, M
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I
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D
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and Malek, A
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SMI
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FL
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and Schneider, H
Schwickerath, U
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Scuri, F and
Seager, P
Sedykh, Y
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Shellard, RC
and Sheridan, A
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GR
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G
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Zalewska, A and
Zalewski, P
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Zevgolatakos, E
Zimin, NI and
Zucchelli, GC
Zumerle, G
DELPHI Collaboration
Περιοδικό:
PHYSICS LETTERS B
Εκδότης:
Elsevier
Τόμος:
426
Αριθμός / τεύχος:
1-2
Σελίδες:
193-206
Επίσημο URL (Εκδότης):
DOI:
10.1016/S0370-2693(98)00147-6
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