Precise probing of the inert Higgs-doublet model at the LHC

Anupam, Ghosh,; Konar, Partha; Seth, Saikat Kumar

doi:10.1103/physrevd.105.115038

Cited by 8 publications

(2 citation statements)

References 116 publications

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“…In this context, Datta et al made a detailed study of multi-lepton signatures [183] of the 'inert doublet model' where a decoupled scalar doublet plays the role of dark matter [174]. Several other studies on similar lines followed [174][175][176][177][178][179][180][181][182].…”

Section: Hunting For Higgsesmentioning

confidence: 99%

Indian contributions to LHC theory

Raychaudhuri

2023

Eur. Phys. J. Spec. Top.

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Indian scientists began to work on the theoretical aspects of LHC physics from the early 1980s, at the same time when the rest of the world started taking interest in this then-futuristic topic. From this point grew a whole school of collider phenomenologists, who now form a significant fraction of the Indian high-energy physics community. This article briefly reviews the growth and contributions of the Indian school, on the way describing some of the physics ideas while placing the work in the international context, and proceeding thus, brings the story up to date in mid-2022.Dedicated to the memory of the late D.P. Roy (1941Roy ( -2017, the father of Indian collider theory. The expectant 80sThe LHC owes its origin [1] to CERN's far-sighted leaders, Léon van Hove, who served from 1976-1980 as the Scientific Director-General, and Technical Director-General Sir John Adams (1976)(1977)(1978)(1979)(1980)(1981), who resolved that it would be feasible and scientifically rewarding to build the next-generation storage ring at CERN. Thus, in 1977, Adams wrote the crucial concept note that the LEP collider 1 tunnel, which would be excavated in the 1980s, should be made large enough to accommodate the superconducting magnets required for a future phase of proton acceleration at higher energies. This 1977 note may be thought of as the genesis of the LHC. By 1978, it was already well known in the community, even though the formal approval for the LEP came only in 1981, and the machine itself started running in 1989 [2]. However, the fact that the 20 TeV LHC would eventually come and that the physics at such a machine should be studied, was in the air right from the early 1980s onward. Moreover, the USA was supposed to build a 40 TeV Superconducting Super Collider (SSC) which, sadly, never materialised 2 . The 1980s were, in fact, a period of great optimism for high-energy physics -or, as it was then more commonly known, elementary particle physics. One trigger for this may have lain in the decision of the Nobel Prize committee, in 1979, to recognise the work of Glashow (1961) [3], of Salam (1966-1968 1 The Large Electron-Positron collider.2 It was sanctioned in 1989, and eventually cancelled in 1993.

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Section: Hunting For Higgsesmentioning

confidence: 99%

Indian contributions to LHC theory

Raychaudhuri

2023

Eur. Phys. J. Spec. Top.

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“…DM paradigms exist in the literature attempting to explain the DM's particle nature. Some of the most popular ones are weakly interacting massive particles (WIMP) [14][15][16][17][18][19][20][21], feebly interacting massive particle (FIMP) [22][23][24][25][26][27][28][29], asymmetric dark matter models [30,31], models with axion or axion-like particle (ALP) DM [32][33][34][35] etc. Although these models can explain the DM relic density of the Universe, their parameter spaces are restricted from different experimental searches.…”

Section: Jhep12(2022)167mentioning

confidence: 99%

Top-philic dark matter in a hybrid KSVZ axion framework

Anupam

Konar

Roshan

2022

J. High Energ. Phys.

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We explore a two-component dark matter scenario in an extended Kim-Shifman-Vainshtein-Zakharov (KSVZ) axion framework. This hybrid setup incorporates an extra SU(2)L complex singlet scalar whose lightest component plays the role of one of the dark matter, while the QCD axion of the KSVZ model acts as a second dark matter candidate. In this work, we focus on accentuating the role of vector-like quark that naturally emerges in the KSVZ extension on the dark matter and collider phenomenology. Here, we demonstrate that the presence of this colored particle can significantly affect the allowed dark matter parameter space of the scalar dark matter by opening up additional co-annihilation as well as the direct detection channels. Moreover, the interaction between the color particle with the top quark and scalar dark matter provides a unique topology to generate a boosted-top pair with considerable missing transverse momentum at the LHC. Using jet substructure variables and multivariate analysis, here we show that one can already exclude a vast region of parameter space with 139 fb−1 integrated luminosity at 14 TeV LHC.

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