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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-1068
DTSTART:20080314T210000Z
DURATION:PT1H0M0S
DTSTAMP:20260409T030819Z
LAST-MODIFIED:20080310T164044Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:The Quest for Spinning Glue\, Physics Department Colloquium\, 
 Bernd Surrow\, MIT
DESCRIPTION:Scattering experiments have played an important role in ou
 r current understanding of the world around us. This field aims to ans
 wer profound questions such as the origin of the proton mass and spin.
  Numerous experimental results contributed in the last decades to the 
 test and exploration of the field theory among quarks and gluons known
  as Quantum Chromodynamics (QCD). In contrast to physics at a large di
 stance scales (e.g. atomic\, molecular and nuclear)\, the mass of the 
 proton originates predominantly in the interactions among its constitu
 ents\, rather than in the bare masses of the constituents themselves. 
 The strong force that confine quarks inside the proton lead to abundan
 t gluons and quark-antiquark pairs. Those are crucial silent partners 
 in matter\, making dominant contributions to the mass of the visible u
 niverse. It is not yet completely known how these silent partners also
  make critical contributions to fundamental properties of the proton o
 ther than mass such as the spin of the proton. The high-energy spin ph
 ysics program at the RHIC facility at Brookhaven National Laboratory f
 ocuses on the collision of high-energy polarized protons to gain a dee
 per understanding of the spin structure and dynamics of the proton\, i
 n particular to provide better insight into the role of gluons to make
  up the spin of the proton. After an introduction into this field\, I 
 will review experimental results for gluons making up a large contribu
 tion to the proton followed by first results obtained on the quest for
  spinning glue. I will conclude with an overview of planned measuremen
 ts in the future.
URL:https://www.physics.wisc.edu/events/?id=1068
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