Top Quark Spin Polarization in e γCollision

Details Top Quark Spin Polarization in e γCollision Top Quark Spin Polarization in e γCollision

2007-08-29

arxiv.org/abs/0708.3905v1

Mod. Phys. Lett. A 23, 519-525 (2008)

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures

Scientific paper

10.1142/S021773230802433X

We investigate the degree of spin polarization of single top quarks in the $e\gamma$ collision via the process $e^{+} \gamma \to t \bar{b} \bar{\nu_{e}}$ with center of mass energies $\sqrt{s}$=0.5, 1 and 1.5 TeV of the parental linear $e^{+}e^{-}$ collider. Dominant spin fractions and spin asymmetries for the various top quark spin bases are investigated. We show that $e^{+}$-beam direction is the favorite top quark spin decomposition axis. It is found to be comparable with the ones in $pp$ and $ep$ collisions.

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