Light spinless particle coupled to photons

Massó, Eduard; Toldrà, Ramon

doi:10.1103/physrevd.52.1755

Cited by 168 publications

(194 citation statements)

References 43 publications

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“…Additionally, surveys of so-called 'horizontal branch' stars in globular clusters also limits the coupling by its correlation with their typical helium burning lifetime. Finally, the characterisation of neutrino fluxes from supernova (SN) 1987a also provides limits [35]. In all cases, the characteristic temperatures of the astrophysical processes along with the suppression of ALP-γ conversion for large ALP masses due to energy-momentum mismatch, kinematically limit their reach as well as our ability to induce and observe a conversion.…”

Section: Testing the Coupling To Photonsmentioning

confidence: 99%

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ALPs at colliders

Mimasu

Sanz

2015

J. High Energ. Phys.

191

205

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New pseudo-scalars, often called axion-like particles (ALPs), abound in modelbuilding and are often associated with the breaking of a new symmetry. Traditional searches and indirect bounds are limited to light axions, typically in or below the KeV range for ALPs coupled to photons. We present collider bounds on ALPs from mono-γ, tri-γ and mono-jet searches in a model independent fashion, as well as the prospects for the LHC and future machines. We find that they are complementary to existing searches, as they are sensitive to heavier ALPs and have the capability to cover an otherwise inaccessible region of parameter space. We also show that, assuming certain model dependent correlations between the ALP coupling to photons and gluons as well as considering the validity of the effective description of ALP interactions, mono-jet searches are in fact more suitable and effective in indirectly constraining ALP scenarios.

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Section: Testing the Coupling To Photonsmentioning

confidence: 99%

“…[35][36][37] for excellent reviews). Finally, beam dump experiments are a terrestrial probe with a good sensitivity to ALP-γ couplings.…”

Section: Testing the Coupling To Photonsmentioning

confidence: 99%

ALPs at colliders

Mimasu

Sanz

2015

J. High Energ. Phys.

191

205

View full text Add to dashboard Cite

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“…A well-known example of LPB is the axion [1], whose mass m is given by the approximate relation m ≃ 0.7 (10 10 GeV/M ) [2]. However, m and M are to be regarded as independent parameters as long as generic LPBs are concerned [3].…”

Section: Many Realistic Extensions Of the Standardmentioning

confidence: 99%

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Dupays

Roncadelli

2007

Nuclear Physics B - Proceedings Supplements

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Light Pseudoscalar Bosons (LPBs) coupled to two photons are predicted by many realistic extensions of the Standard Model and give rise to birefringence and dichroism in a light beam travelling in an external magnetic field. These effects have recently been detected by the PVLAS collaboration, thereby strongly suggesting the existence of a LPB. We provide an astrophysical cross-check for such a claim. Actually, we show that in the double pulsar J0737-3039 photon-LPB conversion can give rise to a characteristic attenuation pattern of the light beam emitted by one of the pulsars when it goes through the magnetosphere of the companion. The effect under consideration shows up in the γ-ray band and can be detected by the upcoming GLAST mission.

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“…For example, if from among the SM particles, the general axion couples only to the photon field, the dominant production processes will be e − γ → ea λ , p + γ → p + a λ , and p + n → p + nγa λ . In this case, the considerably weaker bound [46] f X 2.32 × 10 6 GeV c γ (4.21)…”

Section: Axion Production Without Subsequent Detection: Stars and mentioning

confidence: 99%

Phenomenological constraints on axion models of dynamical dark matter

Thomas

2012

Phys. Rev. D

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In two recent papers [1,2] we introduced "dynamical dark matter" (DDM), a new framework for dark-matter physics in which the requirement of stability is replaced by a delicate balancing between lifetimes and cosmological abundances across a vast ensemble of individual dark-matter components whose collective behavior transcends that normally associated with traditional darkmatter candidates. We also presented an explicit model involving axions in large extra spacetime dimensions, and demonstrated that this model has all of the features necessary to constitute a viable realization of the general DDM framework. In this paper, we complete our study by performing a general analysis of all phenomenological constraints which are relevant to this bulk-axion DDM model. Although the analysis in this paper is primarily aimed at our specific DDM model, many of our findings have important implications for bulk axion theories in general. Our analysis can also serve as a prototype for phenomenological studies of theories in which there exist large numbers of interacting and decaying particles.

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Light spinless particle coupled to photons

Cited by 168 publications

References 43 publications

ALPs at colliders

ALPs at colliders

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Phenomenological constraints on axion models of dynamical dark matter

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