Collider signals of baryogenesis and dark matter from 
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 mesons: A roadmap to discovery

Alonso-Álvarez, Gonzalo; Elor, Gilly; Escudero, Miguel

doi:10.1103/physrevd.104.035028

Cited by 40 publications

(68 citation statements)

References 133 publications

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“…Recently a model was proposed that connects DM production with a -mesogenesis mechanism to explain the baryon asymmetry in the universe [9,10]. A neutral meson can oscillate and then decay -violating into a DS baryon DS and SM hadrons.…”

Section: Prospects On Searches For Baryonic Dark Mattermentioning

confidence: 99%

Dark matter searches at LHCb

Mombächer¹

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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Section: Prospects On Searches For Baryonic Dark Mattermentioning

confidence: 99%

Dark matter searches at LHCb

Mombächer¹

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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“…The most tantalising signs for New Physics are the apparent existence of Dark Matter and the matter-antimatter asymmetry in the universe. Recently, a model has been proposed that can simultaneously explain these two pressing unknowns [1,2]. In this model, neutral B mesons oscillate and then decay into a neutral dark-sector baryon (hereafter called ψ DS ) plus SM a e-mail: alexandre.brea.rodriguez@cern.ch b e-mail: veronika.chobanova@cern.ch c e-mail: xabier.cid.vidal@cern.ch (corresponding author) d e-mail: saul.lopez.solino@cern.ch e e-mail: diego.martinez.santos@cern.ch f e-mail: titus.mombacher@cern.ch g e-mail: claire.prouve@cern.ch h e-mail: emilioxose.rodriguez.fernandez@rai.usc.es i e-mail: carlos.vazquez@cern.ch hadrons.…”

Section: Introductionmentioning

confidence: 99%

“…In order to fulfill the observed matter anti-matter imbalance, the inclusive branching fractions of b hadrons decaying into the dark-sector baryon must be relatively large, 10 −4 , with experimental upper limits ranging from ≤ 10 −4 to ≤ 10 −2 depending on the considered ψ DS mass [2,6]. Rel-atively high values could in principle also modify Γ s /Γ d if they have different values for B 0 s mesons compared to B 0 mesons.…”

Section: Introductionmentioning

confidence: 99%

“…These channels are sensitive to different O q 1 q 2 operators out of those introduced in Refs. [1,2]. More precisely, B 0 → ψ DS Λ(1520) decays would be sensitive to…”

Section: Introductionmentioning

confidence: 99%

“…Finally, ε T OT AL is the product of ε REC , ε SE L/REC and ε P I D/SE L . The number next to ψ DS refers to m ψDS , given in MeV/c2…”

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Prospects on searches for baryonic Dark Matter produced in $${\varvec{b}}$$-hadron decays at LHCb

et al. 2021

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A model that can simultaneously explain Dark Matter relic density and the apparent matter anti-matter imbalance of the universe has been recently proposed. The model requires b-hadron branching fractions to Dark Matter at the per mille level. The b-hadrons decay to a dark sector baryon, $$\psi _{\mathrm{DS}}$$ ψ DS , which has a mass in the region $$940 ~\mathrm{MeV}/c^2\le m_{\psi _{\mathrm{DS}}}\le 4430~\mathrm{MeV}/c^2$$ 940 MeV / c 2 ≤ m ψ DS ≤ 4430 MeV / c 2 . In this paper, we discuss the sensitivity of the LHCb experiment to search for this dark baryon, covering different types of topology and giving prospects for Runs 3 and 4 of the LHC, as well as for the proposed Upgrade II. We show that the LHCb experiment can cover the entire mass range of the hypothetical dark baryon.

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Disintegration of beauty: a precision study

Lenz

Laura

Rusov

2023

J. High Energ. Phys.

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We update the Standard Model (SM) predictions for B-meson lifetimes within the heavy quark expansion (HQE). Including for the first time the contribution of the Darwin operator, SU(3)F breaking corrections to the matrix element of dimension-six four-quark operators and the so-called eye-contractions, we obtain for the total widths $$ \Gamma \left({B}^{+}\right)=\left({0.58}_{-0.07}^{+0.11}\right){\textrm{ps}}^{-1},\Gamma \left({B}_d\right)=\left({0.63}_{-0.07}^{+0.11}\right){\textrm{ps}}^{-1},\Gamma \left({B}_s\right)=\left({0.63}_{-0.07}^{+0.11}\right){\textrm{ps}}^{-1} $$ Γ B + = 0.58 − 0.07 + 0.11 ps − 1 , Γ B d = 0.63 − 0.07 + 0.11 ps − 1 , Γ B s = 0.63 − 0.07 + 0.11 ps − 1 , and for the lifetime ratios τ(B+)/τ(Bd) = 1.086 ± 0.022, τ(Bs)/τ(Bd) = 1.003 ± 0.006 (1.028 ± 0.011). The two values for the last observable arise from using two different sets of input for the non-perturbative parameters $$ {\mu}_{\pi}^2\left({B}_d\right),{\mu}_G^2\left({B}_d\right) $$ μ π 2 B d , μ G 2 B d , and $$ {\rho}_D^3\left({B}_d\right) $$ ρ D 3 B d as well as from different estimates of the SU(3)F breaking in these parameters. Our results are overall in very good agreement with the corresponding experimental data, however, there seems to emerge a tension in τ(Bs)/τ(Bd) when considering the second set of input parameters. Specifically, this observable is extremely sensitive to the size of the parameter $$ {\rho}_D^3\left({B}_d\right) $$ ρ D 3 B d and of the SU(3)F breaking effects in $$ {\mu}_{\pi}^2,{\mu}_G^2 $$ μ π 2 , μ G 2 and $$ {\rho}_D^3 $$ ρ D 3 ; hence, it is of utmost importance to be able to better constrain all these parameters. In this respect, an extraction of $$ {\mu}_{\pi}^2\left({B}_s\right),{\mu}_G^2\left({B}_s\right),{\rho}_D^3\left({B}_s\right) $$ μ π 2 B s , μ G 2 B s , ρ D 3 B s from future experimental data on inclusive semileptonic Bs-meson decays or from direct non-perturbative calculations, as well as more insights about the value of $$ {\rho}_D^3(B) $$ ρ D 3 B extracted from fits to inclusive semileptonic B-decays, would be very helpful in reducing the corresponding theory uncertainties.

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Collider signals of baryogenesis and dark matter from B mesons: A roadmap to discovery

Cited by 40 publications

References 133 publications

Dark matter searches at LHCb

Dark matter searches at LHCb

Prospects on searches for baryonic Dark Matter produced in $${\varvec{b}}$$-hadron decays at LHCb

Disintegration of beauty: a precision study

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