The reaction e e Icirc frac14 Icirc frac14 is studied using a collider with equal beam energies of 3 GeV The differential cross section in natural units is given by where E CM is the total centre of mass energy and Icirc cedil is the angle between the initial e and the final Icirc frac14 If the detector can only record an event if the Icirc frac14 Icirc frac14 pair makes an angle of at least 25 0 relative to the beam line, what fraction of events will be recorded What is the total cross section for this reaction in nanobarns If the reaction is recorded for 10 7 s at a luminosity of L 10 31 cm 2 s, how many events are expected a (1 cos 0), AECM do UP 4E

Question: The reaction e + + e Î¼ + + Î¼ is studied using a collider with equal beam energies of 3 GeV. The differential cross-section

The reaction e⁺+ e^ˆ’†’ Î¼⁺+ Î¼^ˆ’is studied using a collider with equal beam energies of 3 GeV. The differential cross-section in natural units is given by

a? (1+ cos² 0), AECM do UP 4E?

where E_CM is the total centre-of-mass energy and Î¸ is the angle between the initial e^ˆ’ and the final Î¼^ˆ’. If the detector can only record an event if the Î¼⁺Î¼^ˆ’ pair makes an angle of at least 25⁰ relative to the beam line, what fraction of events will be recorded? What is the total cross-section for this reaction in nanobarns? If the reaction is recorded for 10⁷ s at a luminosity of L = 10³¹/cm² s, how many events are expected?

a? (1+ cos 0), AECM do UP 4E?

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