Abstract
For some b-physics topics it is not enough to just tag the presence of b-quarks – it is necessary to also know whether the quark or anti-quark state is in the data. Examples include measuring the forward-backward asymmetry \(A_{\textrm{FB}}^{\textrm{b}}\) which must distinguish b- from \(\bar{\textrm{b}}\) at their point of production or measurements of neutral B-meson oscillations for which knowledge of the b-quark flavour is required at both the production and the decay time. Clearly, in order to achieve this a method that can somehow tag the quark charge must be employed. Note that this procedure is often (rather confusingly) termed ‘flavour tagging’.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
Note that with Bd 0-mesons these correlations become diluted due to \(\textrm{B}^{0} - \bar{\rm B}^{0}\) mixing which transforms a b-quark to a \(\bar{\textrm{b}}\) quark, and vice-versa, at some time between production and decay.
References
R.D. Field, R.P. Feynman, Nucl. Phys. B 136, 1 (1978)
ALEPH Collab., A. Heister et al.: Eur. Phys. J.C 22, 613 (2002)
DELPHI Collab., P. Abreu et al.: Eur. Phys. J.C 20, 455 (2001)
OPAL Collab., G. Abbiendi et al.: Eur. Phys. J.C 13, 225 (2000)
DELPHI Collab., J. Abdallah et al.: Phys. Lett. B 576, 29 (2003) rates and decay properties. CERN-EP/2001-050
ALEPH Collab., D. Buskulic et al.: Phys. Lett. B 361, 221 (1995)
ALEPH Collab., R. Barate et al.: Eur. Phys. Lett. J. C 2, 197 (1998)
ALEPH Collab., R. Barate et al.: Phys. Lett. B 492, 259 (2000)
OPAL Collab., K. Ackerstaff et al.: Eur. Phys. J. C 5, 379 (1998)
ALEPH Collab., A. Heister et al.: Eur. Phys. J. C 22, 201 (2001)
DELPHI Collab.: Determination of \(A_{\textrm{FB}}^{\textrm{b}}\) at the Z pole using inclusive charge reconstruction and lifetime tagging., CERN-EP/Paper 329 (2003) (submitted to EPJ)
L3 Collab., M. Acciarri et al.: Phys. Lett. B 439, 225 (1998)
OPAL Collab., G. Abbiendi et al.: Phys. Lett. B 546, 29 (2002)
ALEPH Collab., A. Heister et al.: Eur. Phys. J. C 24, 177 (2002)
DELPHI Collab., J. Abdallah et al.: Eur. Phys. J. C 34, 109 (2004)
L3 Collab.,M. Acciarri et al.: Phys. Lett. B 448, 152 (1999)
OPAL Collab., G. Abbiendi et al.: Phys. Lett. B 577, 18 (2003)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2010 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Barker, G.J. (2010). Tagging b-quark Charge. In: b-Quark Physics with the LEP Collider. Springer Tracts in Modern Physics, vol 236. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-05279-8_5
Download citation
DOI: https://doi.org/10.1007/978-3-642-05279-8_5
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-05278-1
Online ISBN: 978-3-642-05279-8
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)