Enhanced Higgs boson coupling to charm pairs - INSPIRE

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Enhanced Higgs boson coupling to charm pairs

Cédric Delaunay
(
- Annecy, LAPTH and
- CERN
)
,
Tobias Golling
(
- Yale U.
)
,
Gilad Perez
(
- CERN and
- Weizmann Inst.
)
,
Yotam Soreq
(
- Annecy, LAPTH
)

Oct 25, 2013

8 pages

Published in:

Phys.Rev.D 89 (2014) 3, 033014

Published: Feb 25, 2014

e-Print:

1310.7029 [hep-ph]

DOI:

10.1103/PhysRevD.89.033014

Report number:

CERN-PH-TH-2013-252,
LAPTH-062-13

View in:

reference search83 citations

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Abstract: (APS)

We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs-to-bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs-to-charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs-to-charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.

Note:

8 pages, 3 figures

14.80.Bn
coupling: Higgs
charm: coupling
coupling: (Higgs particle charm charm)
Higgs particle --> charm charm
jet: charm
effective Lagrangian
sensitivity
numerical calculations
CERN LHC Coll

References(49)

Figures(3)

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)
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