Two independent measurements are made of the lifetime of a charmed strange meson. Each measurement has a standard deviation of 6.6x 10-15 seconds. The lifetime of the meson is estimated by averaging the two measurements. What is the standard deviation of this estimate?

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A: From Uncertainty principle ∆E∆t≥h4π∆t≈h4π∆E=h4π∆mc2

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Q: Why does the η0 meson have such a short lifetime compared to most other mesons?

A: Mesons are usually unstable and have both particle and antiparticle. They decay in 1/1000000 times…

Q: A particle is propagating at relativistic speed. It is observed to have an energy of 3.1 GeV and a…

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Q: The lifetime of a muon is 2.20 ?s. If you measured its mass to be 105.7 MeV/c2, what would be the…

A: According to Heisenberg's uncertainty principle, the product of uncertainties of a canonical pair of…

Q: A p-meson at rest decays according toπ− → μ +  What is the energy carried offby the neutrino? Assume…

A: The reaction,

Q: Please don't prvide handwritten solution...

A: Given data: m(χ−)c2=575GeVm(χ0)c2=171GeVand,m(W)c2=80.4GeVNow, the given decay process is:χ−→χ0+WThe…

Q: A magnetic fi eld of 1.4 T is used to accelerate 10.0- MeV protons in a cyclotron. (a) What is the…

A: (a) Let B denotes the magnetic field, m denotes the proton’s mass, r denotes the cyclotron (magnet)…