000581722 001__ 581722
000581722 005__ 20230405213046.0
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000581722 0247_ $$2datacite_doi$$a10.3204/PUBDB-2023-01632
000581722 037__ $$aPUBDB-2023-01632
000581722 041__ $$aEnglish
000581722 088__ $$2Other$$aPAC07-THPMN080
000581722 088__ $$2Other$$aEUROTEV-REPORT-2007-040
000581722 1001_ $$aHartin, Anthony$$b0
000581722 245__ $$aIncoherent pair background processes with full polarizations at the ILC
000581722 260__ $$c2007
000581722 300__ $$a3
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000581722 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$breport$$mreport$$s1680689952_32533
000581722 3367_ $$2BibTeX$$aTECHREPORT
000581722 4900_ $$2Author$$a771824
000581722 520__ $$aIncoherent background pair production processes are studied with respect to full polarizations of all states. Real initial photon polarizations are obtained via a QED calculation of the beamstrahlung process. Virtual photon polarizations are related to the electric field of the colliding bunches at the point of pair production. An explicit expression for the virtual photon polarization vector is developed and found to have no circular polarization component. Pair polarization states are highly dependent on initial state circular polarization and are consequently produced almost unpolarized. The Breit-Wheeler cross-section with full polarizations is calculated and coded into the CAIN pair generator program. Numerical evaluations of the ILC, operating with the seven proposed collider parameter sets, shows that there are 10 - 20% less low energy pairs than previously thought. Collider luminosity, as calculated by CAIN, remains the same.
000581722 536__ $$0G:(DE-HGF)POF4-899$$a899 - ohne Topic (POF4-899)$$cPOF4-899$$fPOF IV$$x0
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000581722 650_7 $$2autogen$$abeam handling techniques
000581722 650_7 $$2autogen$$aelectron accelerators
000581722 650_7 $$2autogen$$aelectron beams
000581722 650_7 $$2autogen$$alinear colliders
000581722 650_7 $$2autogen$$aparticle beam bunching
000581722 650_7 $$2autogen$$aphoton polarisation
000581722 650_7 $$2autogen$$aquantum electrodynamics
000581722 650_7 $$2autogen$$aBreit-Wheeler cross-section
000581722 650_7 $$2autogen$$aCAIN pair generator program
000581722 650_7 $$2autogen$$aILC
000581722 650_7 $$2autogen$$aQED calculation
000581722 650_7 $$2autogen$$abeamstrahlung process
000581722 650_7 $$2autogen$$acircular polarization
000581722 650_7 $$2autogen$$acollider luminosity
000581722 650_7 $$2autogen$$acolliding bunches
000581722 650_7 $$2autogen$$aelectric field
000581722 650_7 $$2autogen$$aelectron energy
000581722 650_7 $$2autogen$$aincoherent pair background processes
000581722 650_7 $$2autogen$$aphoton polarizations
000581722 650_7 $$2autogen$$aEquations
000581722 650_7 $$2autogen$$aFourier transforms
000581722 650_7 $$2autogen$$aPhoton collider
000581722 650_7 $$2autogen$$aPhysics
000581722 650_7 $$2autogen$$aPolarization
000581722 650_7 $$2autogen$$aProduction
000581722 650_7 $$2autogen$$aStokes parameters
000581722 650_7 $$2autogen$$aTaylor series
000581722 650_7 $$2autogen$$aVectors
000581722 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0
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