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At the CERN Large Hadron Collider experiment, the non-resonant double Higgs production via vector-boson fusion represents a unique mean to probe the VVHH (V=Z, W$^{\pm}$) Higgs self-coupling at the current center of mass energies. Such a…

High Energy Physics - Experiment · Physics 2023-03-01 Brunella D'Anzi , Nicola De Filippis , Walaa Elmetenawee , Giorgia Miniello

Searches for vector-like quarks and $t\bar{t}$ resonances are performed with the ATLAS experiment at the Large Hadron Collider using an integrated luminosity of 14.3~fb$^{-1}$ of proton-proton collisions recorded in 2012 at a center-of-mass…

High Energy Physics - Experiment · Physics 2014-09-12 Bárbara Álvarez González

We propose a novel experimental method to produce and detect weakly interacting light vector bosons using coherent processes in refractive media. A light vector boson would be produced by a laser photon scattered at a plane interface…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Ljubicic , D. Kekez

To distinguish the low-lying vector beauty-charm meson, we systematically study the $B_c^*\to B_c+\gamma$, $B_c^*\to \ell+{\nu}_{\ell}$ and $B_c^{(*)}\to J/\psi+nh$ processes within effective theory by the helicity decomposition method. The…

High Energy Physics - Phenomenology · Physics 2023-10-06 Yiqi Geng , Mingqi Cao , Ruilin Zhu

Several models of new physics, such as grand unified theories, Pati-Salam models, chiral color models, etc., predict the existence of an $SU(2)_L$ doublet of color-octet scalars (COS). In the Manohar-Wise model, the Yukawa couplings of the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Chul Kim , Thomas Mehen

We analyze the constraints on coloured scalar bosons imposed by the current LHC data at $\sqrt{s}=13$ TeV. Specifically, we consider an additional electroweak doublet of colour-octet scalars, satisfying the principle of Minimal Flavour…

High Energy Physics - Phenomenology · Physics 2020-01-08 Víctor Miralles , Antonio Pich

In the present work we study the production of vector resonances at the LHC by means of the vector boson scattering $WZ \to WZ$ and explore the sensitivities to these resonances for the expected future LHC luminosities. We are assuming that…

High Energy Physics - Phenomenology · Physics 2017-12-06 R. L. Delgado , A. Dobado , D. Espriu , C. Garcia-Garcia , M. J. Herrero , X. Marcano , J. J. Sanz-Cillero

The production of heavy mass resonances has been widely studied theoretically and experimentally. Several extensions of the standard model (SM) of particle physics, naturally give rise to a new resonance, with neutral electric charge,…

High Energy Physics - Phenomenology · Physics 2023-05-31 Diego Barbosa , Felipe Díaz , Liliana Quintero , Andrés Flórez , Manuel Sanchez , Alfredo Gurrola , Elijah Sheridan , Francesco Romeo

In this work we reappraise the collider constraints from leptonic final states on the vectorlike colored top partners taking into account the impact of exotic colored vector resonances. These colored states are intrinsic to a broad class of…

High Energy Physics - Phenomenology · Physics 2020-12-09 Sayan Dasgupta , Santosh Kumar Rai , Tirtha Sankar Ray

Detecting coherent phonons pose different challenges compared to coherent photons due to the much stronger interaction between phonons and matter. This is especially true for high frequency heat carrying phonons, which are intrinsic lattice…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Ding Ding , Xiaobo Yin , Baowen Li

Many models, such as topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models, predict the existence of extra U(1) gauge bosons $Z^{\prime}$, which couple preferentially to the third generation. The lepton flavor violating…

High Energy Physics - Phenomenology · Physics 2007-05-23 Chongxing Yue , Yanming Zhang , Hong Li

Flavor Democracy Hypothesis favors existence of iso-singlet quarks and vector-like charged leptons. Their observation at future colliders could shed light on the nature of mass and mixing patterns of known leptons and quarks, as well as…

High Energy Physics - Phenomenology · Physics 2021-03-16 Ali Osman Acar , Osman Emre Delialioglu , Saleh Sultansoy

This contribution describes a search for the associated production of Standard Model vector bosons WZ where the W boson decays leptonically (W->l nu) and the Z boson decays to a heavy flavor quark pair (Z->b b-bar,c c-bar). At least one…

High Energy Physics - Experiment · Physics 2019-08-13 Federico Sforza

The deviations of $B$-meson decays measured in $R_{D^{(*)}}^{\tau\ell}$ and $R_{K^{(*)}}^{\mu e}$ can be explained by the presence of two scalar leptoquarks, a singlet $S_1$ and a triplet $S_3$, mostly coupled to the third generation. We…

High Energy Physics - Phenomenology · Physics 2021-06-16 Leandro Da Rold , Federico Lamagna

LHCb has recently reported more than $2\sigma$ deviation from the Standard Model prediction in the observable $R_{J/\psi}$. We study this anomaly in the framework of a vector leptoquark along with other lepton flavor universality violating…

High Energy Physics - Phenomenology · Physics 2017-09-29 Bhavesh Chauhan , Bharti Kindra

The scalar color octet contribution to the resonance $t\bar{t}$-pair production at the LHC is calculated and analysed with account of the one loop effective two gluon vertex. It is shown that this contribution from the scalar color octet…

High Energy Physics - Phenomenology · Physics 2016-12-02 I. V. Frolov , M. V. Martynov , A. D. Smirnov

A search is presented for a heavy vector resonance decaying into a Z boson and the standard model Higgs boson, where the Z boson is identified through its leptonic decays to electrons, muons, or neutrinos, and the Higgs boson is identified…

High Energy Physics - Experiment · Physics 2021-08-12 CMS Collaboration

In order to simultaneously account for both $R_{D^{(\ast)}}$ and $R_{K^{(\ast)}}$ anomalies in $B$-decays, we consider an extension of the Standard Model by a single vector leptoquark field, and study how one can achieve the required lepton…

High Energy Physics - Phenomenology · Physics 2020-01-29 C. Hati , J. Kriewald , J. Orloff , A. M. Teixeira

The mass spectrum of strange vector kaons resonances is scrutinized, using AdS/QCD with a deformed dilaton that arises from the constituent quark masses. Both the differential configurational entropy and the differential configurational…

High Energy Physics - Phenomenology · Physics 2023-08-22 Roldao da Rocha , Pedro H. O. Silva

Building on our recent proposal to explain the experimental hints of new physics in $B$ meson decays within the framework of Pati-Salam quark-lepton unification, through the interactions of the $(3,1)_{2/3}$ vector leptoquark, we construct…

High Energy Physics - Phenomenology · Physics 2019-03-22 Bartosz Fornal , Sri Aditya Gadam , Benjamin Grinstein