Dirac dark matter and 
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 with U(1) gauge symmetry

Celis, Alejandro; Feng, Wan-Zhe; Vollmann, Martin

doi:10.1103/physrevd.95.035018

Cited by 38 publications

(35 citation statements)

References 127 publications

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“…More studies of L µ − L τ models with extended fermion and scalar sectors have been performed in [52,53]. A complementary study of the interplay of B physics anomalies and Dark Matter in models with gauged Baryon number can be found in [54].…”

Section: Jhep12(2016)106mentioning

confidence: 99%

Explaining dark matter and B decay anomalies with an L μ − L τ model

Altmannshofer

Gori

Profumo

et al. 2016

J. High Energ. Phys.

185

118

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We present a dark sector model based on gauging the L µ − L τ symmetry that addresses anomalies in b → sµ + µ − decays and that features a particle dark matter candidate. The dark matter particle candidate is a vector-like Dirac fermion coupled to the Z gauge boson of the L µ − L τ symmetry. We compute the dark matter thermal relic density, its pair-annihilation cross section, and the loop-suppressed dark matter-nucleon scattering cross section, and compare our predictions with current and future experimental results. We demonstrate that after taking into account bounds from B s meson oscillations, dark matter direct detection, and the CMB, the model is highly predictive: B physics anomalies and a viable particle dark matter candidate, with a mass of ∼ (5 − 23) GeV, can be accommodated only in a tightly-constrained region of parameter space, with sharp predictions for future experimental tests. The viable region of parameter space expands if the dark matter is allowed to have L µ − L τ charges that are smaller than those of the SM leptons.

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Section: Jhep12(2016)106mentioning

confidence: 99%

Explaining dark matter and B decay anomalies with an L μ − L τ model

Altmannshofer

Gori

Profumo

et al. 2016

J. High Energ. Phys.

185

118

View full text Add to dashboard Cite

show abstract

“…Unlike the scalar case, this kind of scenario offers a much richer collider phenomenology since one could assume gauge-like interactions (contrary to Yukawa-like interactions for spin-0 mediators) of the mediator with the SM light quarks and leptons, leading to visible signals, implying stronger constraints [223][224][225][226][227][228][229][230][231][232][233][234][235][236][237][238][239][240][241]. As a consequence we will consider a wider mass range, for both DM and the spin-1 mediator, in our analysis.…”

Section: Vector Dark Mattermentioning

confidence: 99%

The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.

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“…(3.26) The loop functions are given by 27) taking the value F 7 (1) = F 7 (1) = 1/24 in the limit of equal masses. For the SU(2)-and SU(3)-factors η 7 , η 7 , η 8 and χ 7 , χ 8 , χ 8 we refer the reader to tables 1 and 2 as usual.…”

Section: ) Andmentioning

confidence: 99%

“…At the level of concrete NP models, most analyses focus on a generation of the required NP effects at tree level, either by the exchange of Z vector bosons [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] or through leptoquarks [31][32][33][34][35][36][37][38]. An explanation of the anomalies via loop effects, on the other hand, typically leads to correlated imprints on other observables like the anomalous magnetic moment of the muon (a µ ).…”

Section: Jhep04(2017)043mentioning

confidence: 99%

Loop effects of heavy new scalars and fermions in b → sμ + μ −

Arnan

Crivellin

Hofer

et al. 2017

J. High Energ. Phys.

127

190

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Recent measurements of b → sµ + µ − processes at LHCb and BELLE have revealed tensions at the 2 − 3 σ level between the Standard Model (SM) prediction and the experimental results in the channels B → K * µ + µ − and B s → φµ + µ − , as well as in the lepton-flavor universality violating observable R K = Br(B → Kµ + µ − )/Br(B → Ke + e − ). Combined global fits to the available b → sµ + µ − data suggest that these tensions might have their common origin in New Physics (NP) beyond the SM because some NP scenarios turn out to be preferred over the SM by 4 − 5 σ. The fact that all these anomalies are related to muons further suggests a connection (and a common NP explanation) with the long-standing anomaly in the anomalous magnetic moment of the muon, a µ . In this article, we study the impact of a generic class of NP models featuring new heavy scalars and fermions that couple to the SM fermions via Yukawa-like interactions. We consider two different scenarios, introducing either one additional fermion and two scalars or two additional fermions and one scalar, and examine all possible representations of the new particles under the SM gauge group with dimension up to the adjoint one. The models induce one-loop contributions to b → sµ + µ − and a µ which are capable of solving the respective anomalies at the 2σ level, albeit a relatively large coupling of the new particles to muons is required. In the case of b → sµ + µ − , stringent constraints from B s − B s mixing arise which can be relaxed if the new fermion is a Majorana particle.

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Dirac dark matter and b→sℓ+ℓ− with U(1) gauge symmetry

Cited by 38 publications

References 127 publications

Explaining dark matter and B decay anomalies with an L μ − L τ model

Explaining dark matter and B decay anomalies with an L μ − L τ model

The waning of the WIMP? A review of models, searches, and constraints

Loop effects of heavy new scalars and fermions in b → sμ + μ −

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