Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon...

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Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC

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Transcript of Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon...

Page 1: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Color Glass Condensate

1.) saturation problem in HEP2.) evolution equations

3.) basics of gluon saturation4.) basics of CGC

Page 2: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Thanks for material to:

Marzia NardiLarry McLerranDima Kharzeev

Martijn RusscherElena Ferreiro

Kazunori Itakura

Page 3: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Experimental puzzle in HEP (I)

Page 4: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Froissart Bound

Page 5: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Questions

Page 6: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Particle Multiplicities in HEP

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Picture of particle production

Page 8: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Deep Inelastic Scattering

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Deep Inelastic Scattering

Page 10: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

DIS kinematics

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DIS kinematics (cont.)

Page 12: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Deep Inelastic Scattering (cont.)

Page 13: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Structure functions (PDF) of a proton

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Data (ZEUS 1994)

Page 15: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

The Gluon ‘blows up’

RHIC

Page 16: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

The gluon ‘blows up’

Page 17: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Gluon saturation

Page 18: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Gluon density in hadrons

Page 19: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

NMC / E665 Shadowing measurements

Page 20: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Structure function and DGLAP

Page 21: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Qualitative description of DGLAP

Page 22: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

DGLAP at small x

Page 23: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Structure function and BFKL

Page 24: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Qualitative description of BFKL

Page 25: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

BFKL details

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Visualize BFKL in Bjorken frame

Page 27: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Can BFKL explain the rise in F2 ?

Page 28: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Initial Summary: the small x problem

Page 29: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Motivation for the CGC

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Gluon recombination

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Gribov-Levin-Ryskin equation

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Shadowing via GLR

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Saturation region

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A possible phase diagram

Page 35: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Universality in the CGC model

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Saturation and Quantum Evolution

Page 37: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

The McLerran-Venugopolan model

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Why the Color Glass Condensate ?

Page 39: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

CGC phase diagram

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CGC formalism details (I)

Page 41: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

CGC formalism details (I)

Page 42: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

CGC formalism details (I)

Page 43: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

CGC formalism details (I)

Page 44: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

CGC formalism details (I): Classical YM theory

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CGC formalism details (I):Wilson renormalizaiton

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CGC formalism summary

Page 47: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

A new effective theory

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Another phase diagram

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Saturation scale

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Saturation momentum

Page 51: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Saturation scale (II)

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Effective theory solutions

Page 53: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Saturation scale in nuclei

Page 54: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

A time evolution for ‘matter’

Page 55: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

Phenomenology at RHIC

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Final phase diagram

Page 57: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.
Page 58: Color Glass Condensate 1.) saturation problem in HEP 2.) evolution equations 3.) basics of gluon saturation 4.) basics of CGC.

The reach of RHIC

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CGC at LHC


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