Branon radiative corrections to collider physics and precision observables

Cembranos, J. A. R.; Dobado, Antonio; Maroto, Antonio L.

doi:10.1103/physrevd.73.035008

Cited by 42 publications

(28 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The limit in which the description of the effective theory for branons is valid (the weakly coupled region) is also represented in Figure 5. This limit characterises how strongly coupled the brane is and the validity of the tree-level with respect to the loop branon effects [108]. Indeed, the dark matter models computed in this study have a thermally averaged cross section greater than σv = 3 · 10 −26 cm 3 /s.…”

Section: Discussionmentioning

confidence: 78%

Analysis of branon dark matter and extra-dimensional models with AMS-02

et al. 2019

View full text Add to dashboard Cite

In the context of brane-world extra-dimensional theories, we compute the positron production from branon dark matter annihilations and compare with the AMS-02 data. Three different scenarios have been considered; the first two assume that either pulsars or dark matter may explain separately the whole positron fraction as measured by AMS-02, whereas the third one assumes that a suitable combination of these two contributions is needed. For all of them, exclusion diagrams for the brane mass and the tension of the brane, were obtained. Our analysis has been performed for a minimal, a medium and a maximum diffusion model in one extra dimension for both pseudo-Isothermal and Navarro-Frenk-White dark matter halos. Combined with previous cosmological analyses and experimental data in colliders, constraints here enable us to set further bounds on the parameter space of branons. In particular, in the case when pulsars fit the whole AMS-02 data, we have excluded mass-tension regions for masses and tensions smaller than 60.75 TeV and 8.56 TeV respectively. With regard to the scenario in which AMS-02 data are explained by a combination of dark matter and pulsars, masses and tensions smaller than 27.32 TeV and 3.85 TeV respectively turn out to be excluded. Finally, in the scenario with no pulsar contribution, a branon with a mass 38.1 ± 0.2 TeV and a tension 4.99 ± 0.04 TeV can fit well the experimental data.

show abstract

Section: Discussionmentioning

confidence: 78%

Analysis of branon dark matter and extra-dimensional models with AMS-02

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The branons parameter space (f, M ) has been studied through different methods in previous works. For instance, collider detections by the ILC, LHC or CLIC have been taken into account [64,65,[71][72][73][74]. Astrophysical and cosmological bounds for brane-world theories were obtained in [30,[66][67][68][69].…”

Section: Branons and Extra-dimensionsmentioning

confidence: 99%

SKA-Phase 1 sensitivity to synchrotron radio emission from multi-TeV Dark Matter candidates

Cembranos

Cruz-Dombriz

Gammaldi

et al. 2020

Physics of the Dark Universe

View full text Add to dashboard Cite

In the era of radio astronomy, the high sensitivity of the Square Kilometre Array (SKA) could play a decisive role in the detection of new radio sources. In this work, we study the SKA sensitivity to the synchrotron radio emission expected by the annihilation of TeV DM candidate in the Draco dwarf spheroidal galaxy. On the one hand, we consider model-independent DM candidates: we find out that with 1000 hours of data-taking, SKA1-MID will be able to exclude up to 10 TeV thermal DM candidates that annihilate in W + W − and bb channels. We also study as these constraints improve by including a density enhancement due to a DM-spike associated with an intermediate-mass black hole in Draco. On the other hand, we consider extra-dimensional brane-world DM candidates, dubbed branons. In this specific scenario, SKA allows us to set constraints on the branon parameter space (f , M ), where f is related to the coupling of the branon to the Standard Model particles and M is the mass of the branon itself. In particular, we consider two different branon DM candidates. We find out that SKA will be able to set more stringent constraints on the branon DM candidate required in order to fit the AMS-02 data, yet the sensitivity of the instrument should be improved in order to study the branon candidate for the Galactic Centre. Nonetheless, we show that SKA represents -among other detectors -the most promising instrument for multi-wavelength detection of synchrotron radio emission by annihilating multi-TeV DM.PACS numbers: 04.50. Kd, 98.80.-k, 98.80.Cq, 12.60.-i arXiv:1905.11154v2 [hep-ph] 7 Jan 2020 M E dE s G (r, E, E s ) Q e (r, E). (3) The spherical symmetry of the problem and its boundary conditions suggest the use of the image charge 1 The mass-to-light ratio in the case of Draco is M/L ∼ 300M /L [34]. 2 In this work we considered a NFW profile, ρ NFW (r) = ρs r rs 1+ r rs 2 , with ρs = 1.40 GeV/cm 3 and rs = 1 kpc.

show abstract

“…The question is whether these virtual contributions are divergent and in general, if they need to be regularized. Therefore, one can interpret these bounds as restrictions on new physics scales but not strictly on the fundamental couplings of the KK graviton or the branon field (read [17] for further details).…”

Section: Discussionmentioning

confidence: 99%

“…It is interesting to note that KK gravitons and branons contribute also virtually. As it has been discussed independently for KK gravitons [24][25][26][27] and branons [5,17], there are important restrictions on these models by studying other channels, such as twophoton, lepton pair, top quark pair, and e À p production. However, these constraints are not related to M D (in the KK graviton case) or f (in the case of branons).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, it has been shown in Refs. [16,17] that in the flexible brane limit, the KK graviton coupling is exponentially suppressed and the KK gravitons decouple. 1 In the rest of this work we will study in detail the single photon channel for producing branons and KK gravitons at the LHC and their characteristic missing energy and transverse momentum signatures.…”

Section: Collider Phenomenology: Single Photon Channelmentioning

confidence: 96%

See 1 more Smart Citation

Brane worlds at the LHC: Branons and KK gravitons

2013

View full text Add to dashboard Cite

We study the possibility of testing some generic properties of brane world scenarios at the LHC. In particular, we pay attention to Kaluza-Klein graviton and branon production. Both signals can be dominant depending on the value of the brane tension. We analyze the differences between these two signatures. Finally, we use recent data in the single photon channel from the ATLAS Collaboration to constrain the parameter space of both phenomenologies.

show abstract

Branon radiative corrections to collider physics and precision observables

Cited by 42 publications

References 48 publications

Analysis of branon dark matter and extra-dimensional models with AMS-02

Analysis of branon dark matter and extra-dimensional models with AMS-02

SKA-Phase 1 sensitivity to synchrotron radio emission from multi-TeV Dark Matter candidates

Brane worlds at the LHC: Branons and KK gravitons

Contact Info

Product

Resources

About