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Science Clinic => Physics => Topic started by: jman1234 on Aug 10, 2020

Title: An electron and a positron (antielectron), both nearly at rest, collide. What particle(s) is(are) produced?
Post by: jman1234 on Aug 10, 2020

Question 1

All particles can be classified into

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Leptons and quarks

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Hadrons and leptons

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Baryons and leptons

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Mesons and Baryons


Question 2

An electron and a positron (antielectron), both nearly at rest, collide. What particle(s) is(are) produced?

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One photon of energy 1.02 MeV

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Two photons of energy 511 keV

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A pi-meson

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A K-meson and an anti-neutrino
Title: An electron and a positron (antielectron), both nearly at rest, collide. What particle(s) is(are) produced?
Post by: katheyjon on Aug 10, 2020

Answer 1

Hadrons and leptons


Answer 2

Two photons of energy 511 keV