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* Title: Phenomenology of a 750 GeV Singlet


* Abstract: A singlet scalar interpretation of the recently reported diphoton excess at the LHC is to be discussed. The singlet scalar possibly mixes with the Standard Model Higgs boson. Here it is shown that the mixing angle is already strongly constrained by high-mass Higgs searches in the diboson channel, and by Higgs coupling measurements. While a broad resonance is slightly favored, we argue that the signal is consistent with a narrow-width singlet which couples to colored and electromagnetically charged vector-like fermions. Dijet signals are predicted and may be visible in upcoming analyses. Allowing for additional decay modes could explain a broader resonance, however, we show that monojet searches disfavor a large invisible decay width.


* Refereces : 1512.05777 Falkowski, Slone, Volansky

                     1512.07853 Cheung, Ko, Lee, Park, Tseng

                     1512.08307 Son, Urbano 


PTC Seminar / Journal Club / Workshop

PTC Seminar Organizers (click to contact) :
Chang Sub Shin     Jeff Kost     Dongjin Chway
PTC Seminar Schedule (click)

PTC Journal Club Organizer (click to contact) :
-  Di Xu
PTC Journal Club Schedule (click)

List of Articles
No. Category Subject Author Date
Notice Journal Club Journal Club Schedule Sanghyeon 2017.07.07
Notice Research Papers Link to the publications Sanghyeon 2017.04.27
Notice PTC Seminar Use the indico link for the seminar announcements. Sanghyeon 2017.04.27
78 PTC Seminar [Seminar] (Mar 22 2016) by Hwidong Yoo on 'Search for leptophobic Z’ decaying into four leptons in the final state at 8 TeV with the CMS detector' Andrew 2016.03.16
77 Journal Club [Journal Club] (Mar 10 2016) by Doh Young Mo on 'Introduction of Jet-Image: New Method for Jet Tagging' file mo 2016.03.11
76 PTC Seminar [Seminar] (Feb 25 2016) by Masahiro Takimoto on 'Cosmology of Peccei-Quinn Field in Early Universe' file Min-Seok 2016.02.25
75 PTC Seminar [Seminar] (Feb 24 2016) by Pyungwon Ko on <Dark sector shining through 750GeV dark higgs @ LHC> file Min-Seok 2016.02.24
74 PTC Seminar [Seminar] (Feb 18 2016) by Koichi Hamaguchi on <Diphoton Excess and Running Couplings> file ctpuweb 2016.02.18
73 PTC Seminar [Seminar] (Feb 05 2016) by Priyotosh Bandyopadhyay on <Higgs bosons: discovered and hidden, in extended supersymmetric standard models at the LHC> file ctpuweb 2016.02.05
72 Journal Club [Journal Club] (Feb 04 2016) by Kunio Kaneta on `Isocurvature constraints on portal couplings' ctpuweb 2016.02.04
» Journal Club [Journal Club] (Jan 28 2016) by Sang Hui Im file Sanghui 2016.01.28
70 Journal Club [Journal Club] (Jan 21 2016) by Ryoutaro Watanabe file Ryoutaro 2016.01.21
69 Conference / Workshop [School] 2016 Winter School on Collider Physics file ctpuweb 2016.01.15
68 Conference / Workshop [Workshop] Overview on the Recent Diphoton Excess at the LHC Run-II (Jan 08 2016) ctpuweb 2016.01.15
67 Conference / Workshop [Workshop] Non-conventional Searches at the LHC (IBS-CTPU Focused Workshop) (Aug 17-20 2015) ctpuweb 2016.01.15
66 PTC Seminar [Seminar] (Jan 13 2016) by Hiroyuki Tashiro on Search for parity-odd signatures in the gamma ray sky file Min-Seok 2016.01.13
65 PTC Seminar [Seminar] (Jan 12 2016) by Takashi Okamoto on Small-scale problems of cold dark matter model and baryonic solutions to them file Min-Seok 2016.01.12
64 PTC Seminar [Seminar] (Jan 11 2016) by Chang Sub Shin on A complete, calculable, predictive and testable model for all known and required CP violation file Min-Seok 2016.01.11
63 Journal Club [Journal Club] (Dec 10 2012) by Hyungjin Kim file Hyungjin 2015.12.10
62 PTC Seminar [Seminar] (Dec 08 2015) by Paolo Gondolo on Dark Mattert Searches: A Theorest's Perspective file Min-Seok 2015.12.08
61 Journal Club [Journal Club] (Nov 26 2015) by Toyokazu Sekiguchi file Toyo 2015.11.27
60 PTC Seminar [Seminar] (Nov 20 2015) by Jae Sik Lee on Enhanced Charged Higgs Production through W±-Higgs Fusion file Min-Seok 2015.11.20
59 PTC Seminar [Seminar] (Oct 28 2015) by Naonori Sugiyama on <Theoretical Modeling of Cosmological Momentum Field through the Kinetic SZ Effect> file Min-Seok 2015.11.04
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