How Long Does the Y Meson Last?

[Kommandant]

Homework Statement

The Y Meson has a rest mass of 9.6 GeV/c² and a measured width of (Delta)E= 51keV. What is its approximate lifetime (delta)t?

Homework Equations

E=MC²

And.. who knows?

The Attempt at a Solution

We came to the conclusion that 9.6 GeV/c² was related to E=MC².. and we pretty much had no idea with the measured width of (Delta)E= 51keV ( we thought it might be related to electric fields though).

 

[Kommandant]

(Note: Planck's Reduced constant = 1.055x10^-34 and 1 ev = 1.6x10^-19 J)

The question gives you that information

 

[vela]

You might find this page helpful.

http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/parlif.html