Timeline for How to calculate relative branching fractions of the $Z$ boson to specific pairs of "neutral lepton and anti-lepton"?
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| Apr 26, 2014 at 6:59 | comment | added | user12262 | dmckee: "[...] differences are going to be very, very small." -- Thanks (interesting, perhaps not quite unexpected in itself). But please don't miss the conceptual purpose of my question. Analogy: If a car maker is known only to produce and sell cars painted red, green, or blue then what's the actual output (correspondingly) in terms of cars colored magenta, or cyan, or orange? (Are there any actually being made at all? If so, how many, in which proportions? ...) But also analogous: photon pairs from SPDC, and "what they do" ... | |
| Apr 25, 2014 at 23:54 | comment | added | dmckee --- ex-moderator kitten | Off the top of my head the only reason I see for a species-to-species difference would be phase-space differences due to the masses of the pairs. That being the case if the $Z$ is anywhere near the mass shell the differences are going to be very, very small. | |
| Apr 23, 2014 at 17:41 | history | asked | user12262 | CC BY-SA 3.0 |