Revisiting the production of ALPs at B-factories

Merlo, Luca; Pobbe, Federico; Rigolin, S.; Sumensari, Olcyr

doi:10.1007/jhep06(2019)091

Cited by 30 publications

(29 citation statements)

References 71 publications

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“…Importantly, these light axions may constitute a fraction or the totality of the dark matter of the Universe [16][17][18], in which case a plethora of direct [9,[19][20][21][22][23][24][25][26][27][28][29] (see [30] for a recent overview) and indirect [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] detection experiments could be able to detect them. Axions at the heavier end 2 of the currently accessible mass range are best studied at the LHC [50][51][52][53][54][55][56][57][58] and B-factories [59][60][61][62][63][64][65]. For the intermediate regime between the MeV and the GeV scales, reactors [66], ra...…”

Section: Jhep07(2021)059mentioning

confidence: 99%

“…Axions at the heavier end 2 of the currently accessible mass range are best studied at the LHC [50][51][52][53][54][55][56][57][58] and B-factories [59][60][61][62][63][64][65]. For the intermediate regime between the MeV and the GeV scales, reactors [66], rare decay [59,60,63,64,[67][68][69][70][71], beam dump/fixed target [72][73][74][75][76][77][78][79][80] experiments and long-lived particle detectors at the LHC [69,81,82] compete with supernovae [83][84][85] as the most favourable environments for probing axions (see [69] for a recent review). Of particular interest is the interplay between the various axionic couplings in different experiments and observations [85,86] in these mass regimes -see [87][88]…”

Section: Jhep07(2021)059mentioning

confidence: 99%

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Leading logs in QCD axion effective field theory

Alonso-Álvarez

Ertas

Jaeckel

et al. 2021

J. High Energ. Phys.

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The axion is much lighter than all other degrees of freedom introduced by the Peccei-Quinn mechanism to solve the strong CP problem. It is therefore natural to use an effective field theory (EFT) to describe its interactions. Loop processes calculated in the EFT may however explicitly depend on the ultraviolet cutoff. In general, the UV cutoff is not uniquely defined, but the dimensionful couplings suggest to identify it with the Peccei-Quinn symmetry-breaking scale. An example are K+ → π+ + a decays that will soon be tested to improved precision in NA62 and KOTO and whose amplitude is dominated by the term logarithmically dependent on the cutoff. In this paper, we critically examine the adequacy of using such a naive EFT approach to study loop processes by comparing EFT calculations with ones performed in complete QCD axion models. In DFSZ models, for example, the cutoff is found to be set by additional Higgs degrees of freedom and to therefore be much closer to the electroweak scale than to the Peccei-Quinn scale. In fact, there are non-trivial requirements on axion models where the cutoff scale of loop processes is close to the Peccei-Quinn scale, such that the naive EFT result is reproduced. This suggests that the existence of a suitable UV embedding may impose restrictions on axion EFTs. We provide an explicit construction of a model with suitable fermion couplings and find promising prospects for NA62 and IAXO.

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Section: Jhep07(2021)059mentioning

confidence: 99%

Section: Jhep07(2021)059mentioning

confidence: 99%

Leading logs in QCD axion effective field theory

Alonso-Álvarez

Ertas

Jaeckel

et al. 2021

J. High Energ. Phys.

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“…in the interaction terms involving the SM fields L l , H (the Higgs doublet) and the singlet N kL . Thus, the renormalizable Yukawa Lagrangian involving the new singlet fields and invariant under the Z 4 symmetry is 18) where:H ≡ H * , with the antisymmetric matrix 12 = − 12 = 1; y kl and g k k are 3 × 3 complex matrices; and the 3 ×3 matrix M Sk k is taken diagonal with entries larger than v Φ . We have defined the right-handed field through the conjugation operation such that S c kR ≡ (S kL ) c .…”

Section: Alp Couplings To the Sterile Neutrinos And The Seesaw Mechanismmentioning

confidence: 99%

“…For example, depending on the scenario considered, ALPs can be constrained through: Z boson decay into two or three photons [11,12] and other SM heavy resonances decay [14,15]; monophoton, monojets, and triphotons [16], decay into two photons and two leptons [13], non-resonant production [17,18], and photon pair production in ultraperipheral collisions [19] signals at the LHC; production via Primakoff process in fixed target experiments [20][21][22] such as NA62 and SHiP [23,24], in the FASER experiment [25] and also in photon-beam experiments [26]; flavor violation interactions via couplings to the W ± bosons [27,28] and leptons [29]; ALPs as mediators of interactions between the SM particles and dark matter [30]. For somewhat earlier collider probes of axion-like particles see ref.…”

Section: Introductionmentioning

confidence: 99%

Probing ALP-sterile neutrino couplings at the LHC

Alves

Dias

Lopes

2020

J. High Energ. Phys.

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In this work, prospects to probe an overlooked facet of axion-like particles (ALPs)-their potential couplings to sterile neutrinos-are presented. We found that mono-photon searches have the potential to constrain ALP couplings to sterile neutrinos when a new heavy scalar boosts the ALP decay yields. Working within an effective field theory (EFT) approach, we scan the parameters space to establish the reach of the 13 TeV LHC to probe such couplings. We found regions of the parameters space evading several experimental constraints that can be probed at the LHC. Moreover, a complementary role between the LHC and various experiments that search for axions and ALPs can be anticipated for models where ALPs interact with sterile neutrinos. We also present the UV realization of a model having an axion-like particle, a heavy scalar and sterile neutrinos whose parameters are spanned by our EFT approach. The proposed model contains a type of seesaw mechanism for generating masses for the active neutrinos along with sterile neutrinos involving the high energy scale of the spontaneous breaking of the global symmetry associated to the ALP. Some benchmark points of this model can be discovered at the 13 TeV LHC with 300 fb −1 .

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“…ALPs are being searched at high-energy colliders [27][28][29][30][31][32][33][34][35][36][37], beam dump experiments [38,39], via their effects in flavor physics [40][41][42][43][44][45], and through their astrophysical signatures [46][47][48][49] (see Ref. [50] for a review).…”

mentioning

confidence: 99%

Nonresonant Searches for Axionlike Particles at the LHC

Gavela

Sanz

et al. 2020

Phys. Rev. Lett.

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We propose a new collider probe for axionlike particles (ALPs), and more generally for pseudo-Goldstone bosons: nonresonant searches that take advantage of the derivative nature of their interactions with Standard Model particles. ALPs can participate as off shell mediators in the s channel of 2 → 2 scattering processes at colliders like the LHC. We exemplify the power of this novel type of search by deriving new limits on ALP couplings to gauge bosons via the processes pp → ZZ, pp → γγ, and pp → jj using run 2 CMS public data, probing previously unexplored areas of the ALP parameter space. In addition, we propose future nonresonant searches involving the ALP coupling to other electroweak bosons and/or the Higgs particle.

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Revisiting the production of ALPs at B-factories

Cited by 30 publications

References 71 publications

Leading logs in QCD axion effective field theory

Leading logs in QCD axion effective field theory

Probing ALP-sterile neutrino couplings at the LHC

Nonresonant Searches for Axionlike Particles at the LHC

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