Collider tests of the Renormalizable Coloron Model

Bai, Y.; Dobrescu, Bogdan A.

doi:10.1007/jhep04(2018)114

Cited by 16 publications

(22 citation statements)

References 66 publications

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“…Concerning direct searches, the most interesting states to look for at high-p T are the colored ones, since they can be produced via QCD interactions. Following the discussion in [34] (see also [107]), we conclude that the production cross-sections of the radial modes in Ω 1,3,15 are small enough to avoid detection at the LHC provided their masses are around a few TeV. Similar conclusions also hold for the charged color-octect and the R 2 andR 2 leptoquarks [35,45,108].…”

Section: Constraints On the New Fieldssupporting

confidence: 73%

Revisiting the vector leptoquark explanation of the B-physics anomalies

Cornella

Fuentes-Martín

Isidori

2019

J. High Energ. Phys.

178

207

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We present a thorough investigation of the vector leptoquark hypothesis for a combined explanation of the B-physics anomalies. We analyze this hypothesis from a twofold perspective, taking into account recent results from B-physics observables and high-p T searches. First, using a simplified model, we determine the general conditions for a successful lowenergy fit in presence of right-handed leptoquark couplings (neglected in previous analyses). Second, we show how these conditions, in particular a sizable 2-3 family mixing, can be achieved in a motivated ultraviolet completion. Our analysis reinforces the phenomenological success of the vector leptoquark hypothesis in addressing the anomalies, and its compatibility with motivated extensions of the Standard Model based on the idea of flavor non-universal gauge interactions. The implications of right-handed leptoquark couplings for a series of key low-energy observables, namely B s → τ τ and τ → µ lepton flavor violating processes, both in τ and in B decays, are discussed in detail. The role of the ultraviolet completion in precisely estimating other low-energy observables, most notably ∆F = 2 amplitudes, is also addressed. also [32,37]).We provide a detailed implementation of the U 1 leptoquark in a renormalizable model based on the (flavor non-universal) gauge group SU (4) 3 × SU (3) 1+2 × SU (2) L × U (1) , which in turn can be embedded in PS 3 [31]. In this context, we complement the simplified-model analysis by including oneloop contributions to low-energy observables (most notably ∆F = 2 amplitudes and dipole operators) which can be reliably computed only within a UV-complete framework.The paper is organized as follows. In Section 2 we present the simplified-model analysis: we introduce the Lagrangian describing the U 1 couplings to SM fermions, and analyze its low-energy limit. We discuss all the observables insensitive to the UV completion (Section 2.2), which are later used to fit low-energy data (Section 2.3). We finally comment on the high-p T constraints (Section 2.4).The UV-complete model is presented and discussed in Section 3: on the model-building side we pay particular attention to the flavor structure of the model (Section 3.2); on the phenomenological side we present complete expressions for the UV-dependent (loop-induced) observables, which were omitted in the low-energy fit (Section 3.3). The results are summarized in Section 4.

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Section: Constraints On the New Fieldssupporting

confidence: 73%

Revisiting the vector leptoquark explanation of the B-physics anomalies

Cornella

Fuentes-Martín

Isidori

2019

J. High Energ. Phys.

178

207

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“…1 can be either neutral or charged under B − L, depending on the baryon number assignment. If B − L neutral, both η a and σ a are expected to be unstable, decaying to quarks [19] and two gluons respectively [20,21]. In contrast, in the second case, if the lightest octet particle were a scalar, then it would be strictly stable.…”

Section: Bound-state Dark Matter Stability From Dirac Neutrinosmentioning

confidence: 99%

Bound-state dark matter and Dirac neutrino masses

et al. 2018

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We propose a simple theory for the idea that cosmological dark matter (DM) may be present today mainly in the form of stable neutral hadronic thermal relics. In our model, neutrino masses arise radiatively from the exchange of colored DM constituents, giving a common origin for both dark matter and neutrino mass. The exact conservation of B − L symmetry ensures dark matter stability and the Dirac nature of neutrinos. The theory can be falsified by dark matter nuclear recoil direct detection experiments, leading also to possible signals at a next generation hadron collider.

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“…As an alternative example for X, we provide various coloron decays in Table 11. In this example, The G , Θ, and φ I denote a coloron, color-octet scalar, and a singlet scalar respectively [33,34]. So we could call all these entries as 'a renormalizable coloron model'.…”

Section: Theory Motivationmentioning

confidence: 99%

“…The G , Θ, and φ I denote a coloron, color-octet scalar, and a singlet scalar respectively. The three particles naturally arise in a 'renormalizable coloron model' [33,34]. It is interesting that a simple coloron model provides such diverse signatures, depending on the mass spectrum.…”

Section: Theory Motivationmentioning

confidence: 99%

The motivation and status of two-body resonance decays after the LHC Run 2 and beyond

Kim

Kong

Nachman

et al. 2020

J. High Energ. Phys.

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Searching for two-body resonance decays is a central component of the high energy physics energy frontier research program. While many of the possibilities are covered when the two bodies are Standard Model (SM) particles, there are still significant gaps. If one or both of the bodies are themselves non-SM particles, there is very little coverage from existing searches. We review the status of two-body searches and motivate the need to search for the missing combinations. It is likely that the search program of the future will be able to cover all possibilities with a combination of dedicated and model agnostic search approaches.

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Collider tests of the Renormalizable Coloron Model

Cited by 16 publications

References 66 publications

Revisiting the vector leptoquark explanation of the B-physics anomalies

Revisiting the vector leptoquark explanation of the B-physics anomalies

Bound-state dark matter and Dirac neutrino masses

The motivation and status of two-body resonance decays after the LHC Run 2 and beyond

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