Ερευνητικό υλικό ΕΚΠΑ

A measurement of alpha(s) from the scaling violation in e(+)e(-)
annihilation

Αγγλικά

The hadronic fragmentation functions of the various quark flavours and
of gluons are measured in a study of the inclusive hadron production
from Z(0) decays with the DELPHI detector and are compared with the
fragmentation functions measured elsewhere at energies between 14 GeV
and 91 GeV. A large scaling violation is observed, which is used to
extract the strong coupling constant from a fit using a numerical
integration of the second order DGLAP evolution equations. The result is
alpha(s)(M-Z) = 0.124(-0.007)(+0.006) (exp) +/- 0.009(theory)
where the first error represents the experimental uncertainty and the
second error is due to the factorization and renormalization scale
dependence. (C) 1997 Elsevier Science B.V.

1997

Abreu, P
Adam, W
Adye, T
Ajinenko, I
Alekseev, GD and
Alemany, R
Allport, PP
Almehed, S
Amaldi, U
Amato, S and
Andreazza, A
Andrieux, ML
Antilogus, P
Apel, WD
Asman, B
and Augustin, JE
Augustinus, A
Baillon, P
Bambade, P and
Barao, F
Barbi, M
Barbiellini, G
Bardin, DY
Barker, G
and Baroncelli, A
Barring, O
Barrio, JA
Bartl, W
Bates,
MJ
Battaglia, M
Baubillier, M
Baudot, J
Becks, KH and
Begalli, M
Beilliere, P
Belokopytov, Y
Benvenuti, AC and
Berggren, M
Bertini, D
Bertrand, D
Besancon, M
Bianchi,
F
Bigi, M
Bilenky, MS
Billoir, P
Bizouard, MA
Bloch,
D
Blume, M
Bolognese, T
Bonesini, M
Bonivento, W and
Booth, PSL
Bosio, C
Botner, O
Boudinov, E
Bouquet, B and
Bourdarios, C
Bowcock, TJV
Bozzo, M
Branchini, P
Brand,
KD
Brenke, T
Brenner, RA
Bricman, C
Brown, RCA and
Bruckman, P
Brunet, JM
Bugge, L
Buran, T
Burgsmueller, T
and Buschmann, P
Cabrera, S
Caccia, M
Calvi, M
Rozas,
AJC
Camporesi, T
Canale, V
Canepa, M
Cankocak, K and
Cao, F
Carena, F
Carroll, L
Caso, C
Gimenez, MVC and
Cattai, A
Cavallo, FR
Chabaud, V
Charpentier, P and
Chaussard, L
Checchia, P
Chelkov, GA
Chen, M
Chierici, R
and Chliapnikov, P
Chochula, P
Chorowicz, V
Chudoba, J and
Cindro, V
Collins, P
Contri, R
Cortina, E
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Cowell, JH
Crawley, HB
Crennell, D
Crosetti,
G
Maestro, JC
Czellar, S
DahlJensen, E
Dahm, J and
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Davenport, M
and DaSilva, W
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DellaRicca, G and
Delpierre, P
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J
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J
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C
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Zumerle, G

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

398

1-2

194-206

https://doi.org/10.1016/S0370-2693(97)00256-6

10.1016/S0370-2693(97)00256-6

https://pergamos.lib.uoa.gr/uoa/dl/object/3049213