Optimized Variables of the Study of ${\Lambda }_b$ Polarization

Abstract

The value of the $b$-baryon polarization can be extracted from inclusive data at LEP with better than 10\% precision based on current statistics. We present a new variable by which to measure the polarization, which is the ratio of the average electron energy to the average neutrino energy. This variable is both sensitive to polarization and insensitive to fragmentation uncertainties.

10 pages (LaTeX), 2 figures, MIT-CTP-2270, CERN-PPE/94-07

References in corpus (5)

• QCD Predictions for Lepton Spectra in Inclusive Heavy Flavour Decays
• Inclusive Semileptonic B and Polarized Lambda_b Decays from QCD
• Production, Decay, and Polarization of Excited Heavy Hadrons
• Heavy Quark Fragmentation into Heavy Mesons
• Test for Right-Handed $b$ Quark Decays

Cited by in corpus (18)

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• Lambda_b -> Lambda l+ l- form factors and differential branching fraction from lattice QCD
• Hadronization in Z0 decay
• Fragmentation Functions For Baryons in a Quark-Diquark Model
• Measurement of the Average Polarization of b Baryons in Hadronic Z^0 Decays
• Weak magnetic dipole moments in two-Higgs-doublet models
• Heavy baryons as polarimeters at colliders
• Tau lepton distributions in semileptonic B decays
• Spin-Momentum Correlations in Inclusive Semileptonic Decays of Polarized ${\Lambda }_b$ Baryons
• The Weak-Magnetic Moment of Heavy Quarks
• Improved variables for measuring the $Lambd{a}_b$ polarization
• Spin Alignment in the Production of Vector Mesons with Charm and/or Beauty via Heavy Quark Fragmentation
• Non-exotic $Z^{\prime }$ signals in ${\ell }^{+}{\ell }^{-}$, $b\bar{b}$ and $t\bar{t}$ final states at the LHC
• $O({\alpha }_s)$ corrections to the polar angle dependence of the longitudinal spin-spin correlation asymmetry in $e^{+}{e}^{-}\to q\bar{q}$
• Lambda_b-Polarization from its Inclusive Semileptonic Decay
• Importance of Tests for the Complete Lorentz Structure of the t --> W+ b vertex at Hadron Colliders
• Strategy for detecting b polarization effects
• Polarization and Distribution Function of ${\Lambda }_b$ Baryon