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Single top polarisation as a window to new physics

J.A. Aguilar-Saavedra
(
- Granada U., Theor. Phys. Astrophys.
)
,
C. Degrande
(
- CERN
)
,
S. Khatibi
(
- IPM, Tehran
)

Jan 20, 2017

5 pages

Published in:

Phys.Lett.B 769 (2017) 498-502

Published: Jun 10, 2017

e-Print:

1701.05900 [hep-ph]

DOI:

10.1016/j.physletb.2017.04.023

Report number:

CERN-TH-2017-013

View in:

reference search22 citations

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Abstract: (Elsevier)

We discuss the effect of heavy new physics, parameterised in terms of four-fermion operators, in the polarisation of single top (anti-)quarks in the t -channel process at the LHC. It is found that for operators involving a right-handed top quark field the relative effect on the longitudinal polarisation is twice larger than the relative effect on the total cross section. This enhanced dependence on possible four-fermion contributions makes the polarisation measurements specially interesting, in particular at high momenta.

Note:

LaTeX 10 pages. v2: comments and references added, journal version

top: polarization
top: right-handed
polarization: longitudinal
four-fermion interaction
momentum: high
total cross section
CERN LHC Coll
numerical calculations
new physics

References(32)

Figures(8)

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