Comments on the diphoton excess [electronic resource] : Critical reappraisal of effective field theory interpretations.
We consider the diphoton excess observed by ATLAS and CMS using the most up-to-date data and estimate the preferred enhancement in the production rate between 8 TeV and 13 TeV. Within the framework of effective field theory (EFT), we then show that for both spin-0 and spin-2 Standard Model (SM) gaug...
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| Online Access: |
Online Access (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
| Summary: | We consider the diphoton excess observed by ATLAS and CMS using the most up-to-date data and estimate the preferred enhancement in the production rate between 8 TeV and 13 TeV. Within the framework of effective field theory (EFT), we then show that for both spin-0 and spin-2 Standard Model (SM) gauge-singlet resonances, two of the three processes S → ZZ, S → Z<sub>γ</sub>, and S → W W must occur with a non-zero rate. Moreover, we demonstrate that these branching ratios are highly correlated in the EFT. Couplings of S to additional SM states may be constrained and differentiated by comparing the S production rates with and without the vector-boson fusion (VBF) cuts. We find that for a given VBF to inclusive production ratio there is maximum rate of S to gauge bosons, b$\bar{b}$, and lighter quark anti-quark pairs. Furthermore, simultaneous measurements of the width and the VBF ratio may be able to point towards the existence of hidden decays. Beyond Standard Model; Effective Field Theories. |
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| Item Description: | Published through SciTech Connect. 07/08/2016. ": 4299" Journal of High Energy Physics (Online) 2016 7 ISSN 1029-8479 AM. Jernej F. Kamenik; Benjamin R. Safdi; Yotam Soreq; Jure Zupan. |
| Physical Description: | Article No. 42 : digital, PDF file. |