Bounds on supersymmetric effective operators from heavy diphoton searches
- Authors
- Ghilencea, D. M.; Lee, Hyun Min
- Issue Date
- Apr-2017
- Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
- Keywords
- Effective operators beyond MSSM; corrections to heavy diphoton searches; microscopic origin of effective operators
- Citation
- MODERN PHYSICS LETTERS A, v.32, no.13
- Journal Title
- MODERN PHYSICS LETTERS A
- Volume
- 32
- Number
- 13
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4554
- DOI
- 10.1142/S0217732317500821
- ISSN
- 0217-7323
1793-6632
- Abstract
- We identify the bounds on supersymmetric effective operators beyond minimal supersymmetric models (MSSM, etc.), from heavy diphoton resonance (X) negative searches at the LHC, where X is identified with the neutral CP-even (odd), H (Lambda) or both (mass degenerate). While MSSM-like models comply with the data, a leading effective operator of d = 6 can contribute significantly to diphoton production sigma similar to 1 fb, well above its MSSM value and in conflict with recent data. Both the b (b) over bar b and gg production mechanisms of H and A can contribute comparably to this. We examine the dependence of the diphoton cross-section sigma on the values of m(X), Lambda and tan beta, under the experimental constraints from the SM-like Higgs couplings hgg and h gamma gamma (due to mixing) and from the b (b) over bar and t (t) over bar searches. These give Lambda larger than similar to 5 TeV for m(X) in the range 0.5-1 TeV. We show how to generate the d = 6 effective operator from microscopic (renormalizable) models. This demands the presence of vector-like states beyond the MSSM spectrum (and eventually, but not necessarily a gauge singlet), of mass near Lambda and thus outside the LHC reach.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4554)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.