Multi-lepton Signatures of a Hidden Sector in Rare B Decays

By B. Batell, M. Pospelov, A. Ritz. 2009

136 citations recorded by the source corpus.

We explore the sensitivity of flavor-changing b{yields}s transitions to a (sub-) GeV hidden sector with generic couplings to the standard model through the Higgs, vector, and axion portals. The underlying two-body decays of B mesons, B{yields}X{sub s}S, and B{sup 0}{yields}SS, where S denotes a generic new GeV-scale particle, may significantly enhance the yield of monochromatic lepton pairs in the final state via prompt S{yields}ll decays. Existing measurements of the charged lepton spectrum in neutral-current semileptonic B decays provide bounds on the parameters of the light sector that are significantly more stringent than the requirements of naturalness. New search modes, such as B{yields}X{sub s}+n(ll) and B{sup 0}{yields}n(ll) with n{>=}2, can provide additional sensitivity to scenarios in which both the Higgs and vector portals are active, and are accessible to (super-) B factories and hadron colliders.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c49ec1279499c2db9bde5759149d747b38ca1ad9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. M. Drewes
2. A. Ringwald
3. R. Essig
4. M. Shaposhnikov
5. J. Redondo
6. K. Zurek
7. Alexey Boyarsky
8. Oleg Ruchayskiy

Citations in the corpus

• A taste of dark matter: flavour constraints on pseudoscalar mediators (2014, unknown): “There is a similar expression for the decay B → KA [56, 65, 144]:”
• Physics beyond colliders at CERN: beyond the Standard Model working group report (2019, background): “An important property of the scalar portal is that at loop level it can induce flavour-changing transitions, and in particular lead to decays K → πS, B → K(∗)S etc [28, 30, 31] and similarly for the hS2 coupling [32].”
• Expression of interest for the CODEX-b detector (2019, background): “8b [50], as well as direct Higgs decays, shown in Fig.”
• FASER’s physics reach for long-lived particles (2018, unknown): “[94] B.”
• A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, methodology): “Upon integrating out the W boson and top quark, we can write the effective b–s–S coupling as [231]”
• A facility to Search for Hidden Particles (SHiP) at the CERN SPS (2015, unknown): “[192,193] for explicit formulae).”