Comments on the diphoton excess: 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...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2016
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| Online Access: | http://hdl.handle.net/1721.1/103884 https://orcid.org/0000-0001-9531-1319 |
| _version_ | 1811090837135687680 |
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| author | Kamenik, Jernej F. Safdi, Benjamin Ryan Soreq, Yotam Zupan, Jure |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Kamenik, Jernej F. Safdi, Benjamin Ryan Soreq, Yotam Zupan, Jure |
| author_sort | Kamenik, Jernej F. |
| collection | MIT |
| description | 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 --> Zγ, 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, bb[overbar], and lighter quark anti-quark pairs. Simultaneous measurements of the width and the VBF ratio may be able to point towards the existence of hidden decays. |
| first_indexed | 2024-09-23T14:52:44Z |
| format | Article |
| id | mit-1721.1/103884 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:52:44Z |
| publishDate | 2016 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1038842022-10-01T23:06:54Z Comments on the diphoton excess: critical reappraisal of effective field theory interpretations Kamenik, Jernej F. Safdi, Benjamin Ryan Soreq, Yotam Zupan, Jure Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Safdi, Benjamin Ryan Soreq, Yotam 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 --> Zγ, 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, bb[overbar], and lighter quark anti-quark pairs. Simultaneous measurements of the width and the VBF ratio may be able to point towards the existence of hidden decays. Slovenian Research Agency (SRA) (Research core funding No. P1-0035) National Science Foundation (U.S.) NSF CAREER Grant PHY-1151392) United States. Dept. of Energy (Contract Number DE-SC0012567) Massachusetts Institute of Technology. Department of Physics (Pappalardo Fellowship) 2016-08-10T19:23:41Z 2016-08-10T19:23:41Z 2016-07 2016-06 2016-08-03T08:08:22Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/103884 Kamenik, Jernej F., Benjamin R. Safdi, Yotam Soreq, and Jure Zupan. "Comments on the diphoton excess: critical reappraisal of effective field theory interpretations." Journal of High Energy Physics 2016:42 (July 2016) https://orcid.org/0000-0001-9531-1319 en http://dx.doi.org/10.1007/JHEP07(2016)042 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Kamenik, Jernej F. Safdi, Benjamin Ryan Soreq, Yotam Zupan, Jure Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title | Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title_full | Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title_fullStr | Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title_full_unstemmed | Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title_short | Comments on the diphoton excess: critical reappraisal of effective field theory interpretations |
| title_sort | comments on the diphoton excess critical reappraisal of effective field theory interpretations |
| url | http://hdl.handle.net/1721.1/103884 https://orcid.org/0000-0001-9531-1319 |
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