What is the $\gamma \gamma$ resonance at 750 GeV?

Franceschini, Roberto; Giudice, Gian F.; Kamenik, Jernej F.; McCullough, Matthew; Pomarol, Alex; Rattazzi, Riccardo; Redi, Michele; Riva, Francesco; Strumia, Alessandro; Torre, Riccardo

doi:10.1007/JHEP03(2016)144

What is the $\gamma \gamma$ resonance at 750 GeV?

Roberto Franceschini
(
- CERN
)
,
Gian F. Giudice
(
- CERN
)
,
Jernej F. Kamenik
(
- CERN and
- Ljubljana U. and
- Stefan Inst., Ljubljana
)
,
Matthew McCullough
(
- CERN
)
,
Alex Pomarol
(
- CERN and
- Barcelona, Autonoma U. and
- Barcelona, IFAE
)

Dec 15, 2015

45 pages

Published in:

JHEP 03 (2016) 144

Published: Mar 21, 2016

e-Print:

1512.04933 [hep-ph]

DOI:

10.1007/JHEP03(2016)144

Report number:

CERN-PH-TH-2015-302

View in:

reference search399 citations

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Abstract: (arXiv)

Run 2 LHC data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 GeV. We analyse the data in terms of a new boson, extracting information on its properties and exploring theoretical interpretations. Scenarios covered include a narrow resonance and, as preliminary indications suggest, a wider resonance. If the width indications persist, the new particle is likely to belong to a strongly-interacting sector. We also show how compatibility between Run 1 and Run 2 data is improved by postulating the existence of an additional heavy particle, whose decays are possibly related to dark matter.

Note:

v2: 45 pages, 12 figures, final. Factor of 2 changed in table 1, 4th row

Beyond Standard Model
Technicolor and Composite Models
particle: heavy
narrow resonance
two-photon
resonance: (photon photon)
new particle
dark matter
interpretation of experiments
ATLAS

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