Physics opportunities of a 100 TeV proton–proton collider

Arkani-Hamed, Nima; Han, Tao; Mangano, M.; Wang, Lian-Tao

doi:10.1016/j.physrep.2016.07.004

Cited by 396 publications

(707 citation statements)

References 140 publications

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“…It is possible that non-resonant h 2 h 2 production could yield some additional sensitivity for small | sin θ| in this region via other final states with a larger branching ratio, such as h 2 h 2 → 4h 1 , as pointed out in ref. [28]. This would be worthwhile to investigate in the future.…”

Section: Jhep08(2017)096mentioning

confidence: 94%

Non-resonant collider signatures of a singlet-driven electroweak phase transition

Chen

Kozaczuk

Lewis

2017

J. High Energ. Phys.

107

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Abstract:We analyze the collider signatures of the real singlet extension of the Standard Model in regions consistent with a strong first-order electroweak phase transition and a singlet-like scalar heavier than the Standard Model-like Higgs. A definitive correlation exists between the strength of the phase transition and the trilinear coupling of the Higgs to two singlet-like scalars, and hence between the phase transition and non-resonant scalar pair production involving the singlet at colliders. We study the prospects for observing these processes at the LHC and a future 100 TeV pp collider, focusing particularly on double singlet production. We also discuss correlations between the strength of the electroweak phase transition and other observables at hadron and future lepton colliders. Searches for non-resonant singlet-like scalar pair production at 100 TeV would provide a sensitive probe of the electroweak phase transition in this model, complementing resonant di-Higgs searches and precision measurements. Our study illustrates a strategy for systematically exploring the phenomenologically viable parameter space of this model, which we hope will be useful for future work.

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Section: Jhep08(2017)096mentioning

confidence: 94%

Non-resonant collider signatures of a singlet-driven electroweak phase transition

Chen

Kozaczuk

Lewis

2017

J. High Energ. Phys.

107

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“…As was argued in ref. [21], exploring an imprint of the higher spin fields in the primordial non-Gaussianity of ζ may provide a unique probe of string theory. (See also refs.…”

Section: Jhep10(2017)127mentioning

confidence: 99%

“…We only consider the mass range where there is no instability [21,47], e.g., M 2 ≥ 2H for a spin 2 field. For our purpose, we do not need to specify the detail of the interaction for the interacting system with the inflaton and the massive fields.…”

Section: Setup Of the Problemmentioning

confidence: 99%

Large gauge transformation, soft theorem, and Infrared divergence in inflationary spacetime

Tanaka

Urakawa

2017

J. High Energ. Phys.

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It is widely known that the primordial curvature perturbation ζ has several universal properties in the infrared (IR) such as the soft theorem, which is also known as the consistency relation, and the conservation in time. They are valid in rather general single clock models of inflation. It has been argued that these universal properties are deeply related to the large gauge transformations in inflationary spacetime. However, the invariance under the large gauge transformations is not sufficient to show these IR properties. In this paper, we show that the locality condition is crucial to show the consistency relation and the conservation of ζ. This argument also can apply to an interacting system with the inflaton and heavy fields which have arbitrary integer spins, including higher spin fields, which may be motivated from string theory. We will also show that the locality condition guarantees the cancellation of the IR divergences in a certain class of variables whose correlation functions resemble cosmologically observable quantities.

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“…That said, there is room for progress in the direction of more powerful no go theorems, or more general, less model-dependent string theoretic effects (for example exploiting the intrinsic non-localities arising from its extended objects [34], or the pattern of massive states arising in string theory [35]). Regardless, it is very important not to generalize prematurely from a small set of examples or conjectures.…”

Section: Comments On the Nature Of Observational Predictions In Strinmentioning

confidence: 99%

“…In some sense, the most striking potential observables related to string theory might arise from defects such as bubble walls (and/or the negative curvature inside a bubble), or cosmic strings, or even inflation at such a high scale compared to the string tension that stringtheoretic effects become directly detectable [35].…”

Section: Signatures Of Defects (Bubbles Strings Etc)mentioning

confidence: 99%

Inflation in string theory confronts data

Silverstein

2015

Comptes Rendus. Physique

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Following the 2015 Planck release, we briefly comment on the status and some ongoing opportunities in the interface between inflationary cosmology, string theory, and CMB data. The constraints in the r-n s plane introduce a new parameter into inflationary cosmology relative to the simplest quadratic inflation model, in a direction which fits well with couplings to heavy fields as occurs in string theory. The precision of the data permits further searches for and constraints on additional model-dependent features, such as oscillatory N -spectra, a program requiring specific theoretically motivated shapes. Since the perturbations can easily be affected by additional sectors and couplings, null results can usefully bound such contributions. We also review the broader lessons string theory has contributed to our understanding of primordial inflation, and close with some approaches to a more complete framework. Published in a special volume of Comptes Rendus on Inflation: Theoretical and Observational Status.

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Physics opportunities of a 100 TeV proton–proton collider

Cited by 396 publications

References 140 publications

Non-resonant collider signatures of a singlet-driven electroweak phase transition

Non-resonant collider signatures of a singlet-driven electroweak phase transition

Large gauge transformation, soft theorem, and Infrared divergence in inflationary spacetime

Inflation in string theory confronts data

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