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TZOFFSETFROM:-0800
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DTSTART:20150308T100000
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DTSTART:20151101T090000
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DTSTART;TZID=America/Los_Angeles:20151124T160000
DTEND;TZID=America/Los_Angeles:20151124T170000
DTSTAMP:20260713T125245
CREATED:20151020T132905Z
LAST-MODIFIED:20151020T132905Z
UID:152-1448380800-1448384400@rpm.physics.lbl.gov
SUMMARY:Sheldon Stone (Syracuse Univ.) "Pentaquarks and Tetraquarks at LHCb"
DESCRIPTION:Abstract: \nI will discuss the discovery of two pentaquark states both decaying into a J/ψ meson and a proton. The decay mode defines the quark content as c cbar\, u\, u\, d\, and thus are called charmonium pentaquarks. These exotic structures are found in Λb→J/ψ K- p decays whose existence and properties are determined from a full amplitude analysis using 7 and 8 TeV pp collision data corresponding to an integrated luminosity of 3/fb collected by the LHCb experiment. The two states will be shown to be of opposite parity and have spins 3/2 and 5/2. I will also present a determination of spin parity of the the Z(4430) tetraquark meson\, also a charmonium state. Finally different models of pentaquark structure will be discussed.
URL:https://rpm.physics.lbl.gov/event/sheldon-stone-syracuse-univ-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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