Heavy quark charge asymmetries with the CELLO detector

H. J. Behrend*, L. Criegee, J. H. Field, G. Franke, H. Jung, J. Meyer, O. Podobrin, V. Schröder, G. G. Winter, P. J. Bussey, A. J. Campbell, D. Hendry, S. Lumsdon, I. O. Skillicorn, J. Ahme, V. Blobel, W. Brehm, M. Feindt, H. Fenner, J. HarjesJ. Köhne, J. H. Peters, H. Spitzer, W. D. Apel, J. Engler, G. Flügge, D. C. Fries, J. Fuster, P. Gabriel, K. Gamerdinger, P. Grosse-Wiesmann, M. Hahn, U. Hädinger, J. Hansmeyer, H. Küster, H. Müller, K. H. Ranitzsch, H. Schneider, R. Seufert, W. de Boer, G. Buschhorn, G. Grindhammer, B. Gunderson, C. Kiesling, R. Kotthaus, H. Kroha, D. Lüers, H. Oberlack, P. Schacht, S. Scholz, W. Wiedenmann, M. Davier, J. F. Grivaz, J. Haissinski, V. Journé, D. W. Kim, F. Le Diberder, J. J. Veillet, K. Blohm, R. George, M. Goldberg, O. Hamon, F. Kapusta, L. Poggioli, M. Rivoal, G. d'Agostini, F. Ferrarotto, M. Iacovacci, G. Shooshtari, B. Stella, G. Cozzika, Y. Ducros, G. Alexander, A. Beck, G. Bella, J. Grunhaus, A. Klatchko, A. Levy, C. Milsténe

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The production of b and c quarks in e+e- annihilation has been studied with the CELLO detector in the range from 35 GeV up to the highest PETRA energies. The heavy quarks have been tagged by their semileptonic decays. The charge asymmetries for b quarks at 35 and 43 GeV have been found to be Ab=-(22.2±8.1)% and Ab=-(49.1±16.5)%, respectively, using a method incorporating jet variables and their correlations for the separation of the heavy quarks from the back ground of the lighter quarks. For c quarks we obtain Ac=-(12.9±8.8)% and Ac=+(7.7±14.0)%, respectively. The axial vector coupling constants of the heavy quarks c and b are found to be ac=+(0.29±0.46) and ab=-(1.15±0.41) taking {Mathematical expression} mixing into account. The results are in agreement with the expectations from the standard model.

Original languageEnglish
Pages (from-to)333-342
Number of pages10
JournalEuropean Physical Journal C
Volume47
Issue number3
DOIs
StatePublished - Sep 1990

Fingerprint

Dive into the research topics of 'Heavy quark charge asymmetries with the CELLO detector'. Together they form a unique fingerprint.

Cite this