Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-06-15
Phys.Rev. D72 (2005) 103508
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 1 figure, accepted for publication in PRD
Scientific paper
We examine in a model-independent manner the measurements that can be performed at B-factories with sensitivity to dark matter. If a singlet scalar, pseudo-scalar, or vector is present and mediates the Standard Model - dark matter interaction, it can mediate invisible decays of quarkonium states such as the $\Upsilon$, $J/\Psi$, and $\eta$. Such scenarios have arisen in the context of supersymmetry, extended Higgs sectors, solutions the supersymmetric $\mu$ problem, and extra U(1) gauge groups from grand unified theories and string theory. Existing B-factories running at the $\Upsilon(4S)$ can produce lower $\Upsilon$ resonances by emitting an Initial State Radiation (ISR) photon. Using a combination of ISR and radiative decays, the initial state of an invisibly decaying quarkonium resonance can be tagged, giving sensitivity to the spin and CP-nature of the particle that mediates standard model-dark matter interactions. These measurements can discover or place strong constraints on dark matter scenarios where the dark matter is approximately lighter than the $b$-quark. For the decay chains $\Upsilon(nS) \to \pi^+ \pi^- \Upsilon(1S)$ (n=2,3) we analyze the dominant backgrounds and determine that with $400 fb^{-1}$ collected at the $\Upsilon(4S)$, the B-factories can limit $BR(\Upsilon(1S) \to invisible) \lsim 0.1%$.
No associations
LandOfFree
Invisible Quarkonium Decays as a Sensitive Probe of Dark Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Invisible Quarkonium Decays as a Sensitive Probe of Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Invisible Quarkonium Decays as a Sensitive Probe of Dark Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-4942