Difference between revisions of "Lmd phi omega"

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<td>[[File:Mmpgamma_cut_piz.png|thumb|left|500px|Missing mass of proton gamma]]</td>
 
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Revision as of 13:27, 23 May 2014

Estimate

What is known

~700K events of φ from pK+(K-) final state in g11

φ decays to K+K- with BR 0.49

φ decays to γη with BR 0.013

φ decays to γω < 5%

Feasibility

Assume pK+ acceptance ~10%, total φ produced ~ 7M in pφ exclusive production

set the final state particles are pγπ+π- and the acceptance is ~0.0003 with assumption that charged particle ~30% acceptance and photon ~10%

expect η from φ ~30 events

expect ω from φ ~110

First look

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Error creating thumbnail: File missing

Second look

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Missing mass of proton after selecting missing mass square between [0.016,0.024] (pi0) and missing mass of proton gamma between [0.74,0.82] (ω).
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Missing mass of proton after selecting missing mass square between [0.016,0.024] (pi0) and missing mass of proton gamma between [0.52,0.58] (η).
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Missing mass of proton gamma