Broad Diphotons from Narrow States
- Creators
- An, Haipeng
-
Cheung, Clifford
- Zhang, Yue
Abstract
ATLAS and CMS have each reported a modest diphoton excess consistent with the decay of a broad resonance at ~ 750 GeV. We show how this signal can arise in a weakly coupled theory comprised solely of narrow width particles. In particular, if the decaying particle is produced off-shell, then the associated diphoton resonance will have a broad, adjustable width. We present simplified models which explain the diphoton excess through the three-body decay of a scalar or fermion. Our minimal ultraviolet completion is a weakly coupled and renormalizable theory of a singlet scalar plus a heavy vector-like quark and lepton. The smoking gun of this mechanism is an asymmetric diphoton peak recoiling against missing transverse energy, jets, or leptons.
Additional Information
Submitted on 28 Dec 2015. H.A. is supported by the Walter Burke Institute at Caltech and by DOE Grant No. DESC0011632. C.C. is supported by a DOE Early Career Award under Grant No. DE-SC0010255 and a Sloan Research Fellowship. Y.Z. is supported by the Gordon and Betty Moore Foundation through Grant #776 to the Caltech Moore Center for Theoretical Cosmology and Physics, and by the DOE Grant Nos. DE-FG02-92ER40701 and DE-SC0010255.Attached Files
Submitted - 1512.08378v1.pdf
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Additional details
- Eprint ID
- 63647
- Resolver ID
- CaltechAUTHORS:20160113-132530546
- DESC0011632
- Department of Energy (DOE)
- DE-SC0010255
- Department of Energy (DOE)
- 776
- Gordon and Betty Moore Foundation
- DE-FG02- 92ER40701
- Department of Energy (DOE)
- DE-SC0010255
- Department of Energy (DOE)
- Walter Burke Institute for Theoretical Physics, Caltech
- Alfred P. Sloan Foundation
- Created
-
2016-01-13Created from EPrint's datestamp field
- Updated
-
2023-06-02Created from EPrint's last_modified field
- Caltech groups
- Walter Burke Institute for Theoretical Physics, Moore Center for Theoretical Cosmology and Physics
- Other Numbering System Name
- CALT-TH
- Other Numbering System Identifier
- 2015-065