English
Related papers

Related papers: A Composite Model for the 750 GeV Diphoton Excess

200 papers

The diphoton excesses at 750 GeV seen in the LHC data may be the first hint for new physics at the TeV scale. We discuss variations of the model considered earlier, in which one or more diphoton excesses arise from composite pseudo…

High Energy Physics - Phenomenology · Physics 2016-10-12 Keisuke Harigaya , Yasunori Nomura

We discuss an extended scalar model which explains the recent results of diphoton excess at 750 GeV at LHC Run II experiments. An additional singlet scalar boson with the mass of 750 GeV, which couples to top quarks via a dimension five…

High Energy Physics - Phenomenology · Physics 2016-01-08 Shinya Kanemura , Naoki Machida , Shinya Odori , Tetsuo Shindou

We explore a "partial unification" model that could explain the diphoton event excess around $750 \, \rm GeV$ recently reported by the LHC experiments. A new strong gauge group is combined with the ordinary color and hypercharge gauge…

High Energy Physics - Phenomenology · Physics 2016-10-12 Howard Georgi , Yuichiro Nakai

We study models in which the 750 GeV diphoton excess is due to a scalar decaying to two pseudo-Nambu-Goldstone bosons that subsequently decay into two pairs of highly boosted photons, misidentified as individual photons. Performing a model…

High Energy Physics - Phenomenology · Physics 2016-06-02 Luis Aparicio , Aleksandr Azatov , Edward Hardy , Andrea Romanino

We present composite models explaining the diphoton excess of mass around 750 GeV recently reported by the LHC experiments.

High Energy Physics - Phenomenology · Physics 2016-05-13 Keisuke Harigaya , Yasunori Nomura

We propose an NMSSM scenario that can explain the excess in the diphoton spectrum at 750 GeV recently observed by ATLAS and CMS. We show that in a certain limit with a very light pseudoscalar one can reproduce the experimental results…

High Energy Physics - Phenomenology · Physics 2016-05-25 F. Domingo , S. Heinemeyer , J. S. Kim , K. Rolbiecki

Motivated by the recent diphoton excesses reported by both ATLAS and CMS collaborations, we suggest that a new heavy spinless particle is produced in gluon fusion at the LHC and decays to a couple of lighter pseudoscalars which then decay…

High Energy Physics - Phenomenology · Physics 2016-03-02 J. S. Kim , J. Reuter , K. Rolbiecki , R. Ruiz de Austri

We study the diphoton excess at 750 GeV reported by ATLAS and CMS, by assuming that it corresponds to a new spin-two resonant state. We model this state as a massive graviton in a two-site model. We show that the very stringent bounds from…

High Energy Physics - Phenomenology · Physics 2016-06-17 Ezequiel Alvarez , Leandro Da Rold , Javier Mazzitelli , Alejandro Szynkman

The LHC experiments ATLAS and CMS have reported an excess in the diphoton spectrum at \sim 750 GeV. At the same time the motivation for Supersymmetry (SUSY) remains unbowed. Consequently, we review briefly the proposals to explain this…

High Energy Physics - Phenomenology · Physics 2016-07-20 S. Heinemeyer

The latest LHC data suggest an intriguing excess at $m_{\gamma\gamma} = 750$ GeV which apparently requires an explanation from the beyond standard model physics. In this note we explore the possibility for this signal to arise from a…

High Energy Physics - Phenomenology · Physics 2016-06-14 Yu-Chen Guo , Chong-Xing Yue , Zhen-hua Zhao

We explore several perturbative scenarios in which the di-photon excess at 750 GeV can potentially be explained: a scalar singlet, a two Higgs doublet model (2HDM), a 2HDM with an extra singlet, and the decays of heavier resonances, both…

High Energy Physics - Phenomenology · Physics 2016-06-01 Wolfgang Altmannshofer , Jamison Galloway , Stefania Gori , Alexander L. Kagan , Adam Martin , Jure Zupan

We discuss a possibility to explain the 750 GeV diphoton excess observed at the LHC in a three-loop neutrino mass model which has a similar structure to the model by Krauss, Nasri and Trodden. Tiny neutrino masses are naturally generated by…

High Energy Physics - Phenomenology · Physics 2016-04-20 Hiroshi Okada , Kei Yagyu

We provide a theory with a monopole of a strongly-interacting hidden U(1) gauge symmetry that can explain the 750-GeV diphoton excess reported by ATLAS and CMS. The excess results from the resonance of monopole, which is produced via gluon…

High Energy Physics - Phenomenology · Physics 2016-06-29 Masaki Yamada , Tsutomu T. Yanagida , Kazuya Yonekura

We explain the recent diphoton excesses around $750$ GeV by both ATLAS and CMS as a singlet scalar $\Phi$ which couples to SM gluon and neutral gauge bosons only through higher dimensional operators. A natural explanation is that $\Phi$ is…

High Energy Physics - Phenomenology · Physics 2016-05-25 Ligong Bian , Ning Chen , Da Liu , Jing Shu

We show that the 750 GeV diphoton excess can be explained by introducing vector-like quarks and hidden fermions charged under a hidden U(1) gauge symmetry, which has a relatively large coupling constant as well as a significant kinetic…

High Energy Physics - Phenomenology · Physics 2016-08-24 Fuminobu Takahashi , Masaki Yamada , Norimi Yokozaki

We propose an explanation of the LHC data excess resonance of 750 GeV in the diphoton distribution using D-brane models, with gauged baryon number, which accommodate the Standard Model together with vector like exotics. We identify the 750…

High Energy Physics - Phenomenology · Physics 2016-08-03 Christos Kokorelis

We propose a coherent explanation for the 750 GeV diphoton anomaly and the hints of deviations from Lepton Flavor Universality in B decays in terms a new strongly interacting sector with vectorlike confinement. The diphoton excess arises…

High Energy Physics - Phenomenology · Physics 2016-08-31 Dario Buttazzo , Admir Greljo , Gino Isidori , David Marzocca

The ATLAS and CMS experiments at LHC observe small excesses of diphoton events with invariant mass around 750 GeV. Here we study the possibility of nearly parity degenerate and vector-scalar degenerate spectra as well as composite dynamics…

High Energy Physics - Phenomenology · Physics 2016-03-21 Diogo Buarque Franzosi , Mads T. Frandsen

We consider the possibility that the recently observed diphoton excess at $\sim 750$ GeV can be explained by the decay of a scalar particle ($\varphi$) to photons. If the scalar is the remnant of a symmetry-breaking sector of some new gauge…

High Energy Physics - Phenomenology · Physics 2016-06-29 Jorge de Blas , Jose Santiago , Roberto Vega-Morales

In this paper we simultaneously explain the excesses of the 750 GeV diphoton, muon g-2 and $h\to \mu\tau$ in an extension of the two-Higgs-doublet model (2HDM) with additional vector-like fermions and a CP-odd scalar singlet ($P$) which is…

High Energy Physics - Phenomenology · Physics 2016-05-25 Xiao-Fang Han , Lei Wang , Jin Min Yang
‹ Prev 1 2 3 10 Next ›