Difference: SingleTopPolarization (1 vs. 37)

Revision 37
16 Oct 2009 - Main.TomRockwell
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  -- SarahHeim - 07 Jan 2008

Single Top Polarization

Revision 36
13 Oct 2009 - Main.ChipBrock
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Single Top Polarization

Revision 35
07 May 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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Added March 19th: We are not sure any more if it is really Madevent that makes the mistake, maybe the ONETOP code has an error in it.
Added April 11th: Either my macro or Madevent are wrong as full polarization is theoretically expected (see PolarizationMadevent).
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Added May 7th: It is Madevent! I will update PolarizationMadevent.
 

2. Looking for Single Top Polarization in Atlas samples

Revision 34
11 Apr 2008 - Main.SarahHeim
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-- SarahHeim - 07 Jan 2008
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Added March 19th: We are not sure any more if it is really Madevent that makes the mistake, maybe the ONETOP code has an error in it.
Added:
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Added April 11th: Either my macro or Madevent are wrong as full polarization is theoretically expected (see PolarizationMadevent).
 

2. Looking for Single Top Polarization in Atlas samples

Revision 33
09 Apr 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
Revision 32
08 Apr 2008 - Main.SarahHeim
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-- SarahHeim - 07 Jan 2008
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  The application of cuts lead to the expected impact on the shape of the spin correlation distributions.
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Added March 19th: We are not sure any more if it is really Madevent that makes the mistake, maybe the ONETOP code has an error in it.
Revision 31
26 Mar 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008

Single Top Polarization

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1. Summary of what I did before Christmas:

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1. Single Top Polarization using Madevent and ONETOP samples

 

The polarization of single top quarks generated by Madevent was analysed. I looked at the t- as well as the s- production channel. For the t-channel the spin correlation distributions are as expected, but the s-channel distribution in the optimal basis doesn’t show the expected full polarization. Therefore I compared my results with two Tevatron data sets, one set generated by Madevent, the other one a leading order calculation with the ONETOP generator.
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Added March 19th: We are not sure any more if it is really Madevent that makes the mistake, maybe the ONETOP code has an error in it.
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2. Looking for Single Top Polarization in Atlas data

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2. Looking for Single Top Polarization in Atlas samples

 

Revision 30
26 Mar 2008 - Main.SarahHeim
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2. Looking for Single Top Polarization in Atlas data

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META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1201202613" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1005581" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
Revision 29
19 Mar 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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Added March 19th: We are not sure any more if it is really Madevent that makes the mistake, maybe the ONETOP code has an error in it.
 

2. Looking for Single Top Polarization in Atlas data

Revision 28
12 Mar 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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https://hep.pa.msu.edu/wiki/pub/AtlasSingleTop/SingleTopPolarization/single_top_polarization3.pdf
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2. Looking for Single Top Polarization in Atlas data

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11 Mar 2008 - Main.SarahHeim
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https://hep.pa.msu.edu/wiki/pub/AtlasSingleTop/SingleTopPolarization/single_top_polarization3.pdf
 

2. Looking for Single Top Polarization in Atlas data

Revision 25
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
Revision 23
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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2. Looking for Single Top Polarization in Atlas data

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*PolarizationAtlasPartonLevel
 
META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1201202613" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1005581" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
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10 Mar 2008 - Main.SarahHeim
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-- SarahHeim - 07 Jan 2008
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2. Looking for Single Top Polarization in Atlas data

 
META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1201202613" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1005581" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
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24 Jan 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
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META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1201202613" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1005581" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
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META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1199829993" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1006600" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
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META FILEATTACHMENT attachment="single_top_polarization3.pdf" attr="" comment="" date="1199829993" name="single_top_polarization3.pdf" path="single_top_polarization3.pdf" size="1006600" stream="single_top_polarization3.pdf" user="Main.SarahHeim" version="1"
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08 Jan 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
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META FILEATTACHMENT attachment="single_top_polarization.pdf" attr="" comment="" date="1199819271" name="single_top_polarization.pdf" path="single_top_polarization.pdf" size="834972" stream="single_top_polarization.pdf" user="Main.SarahHeim" version="1"
Revision 16
08 Jan 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
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Single Top Polarization

Changed:
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1. Summary of what I did before Christmas:
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1. Summary of what I did before Christmas:

 
Changed:
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The polarization of single top quarks generated by Madevent [1] was analysed. I looked at the t- as well as the s- production channel. For the t-channel the spin correlation distributions are as expected, but the s-channel distribution in the optimal basis doesn’t show the expected full polarization. Therefore I compared my results with two Tevatron data sets, one set generated by Madevent [1], the other one a leading order calculation with the ONETOP generator. This comparison leads to the presumption that Madevent [1] cannot generate the polarization of s-channel produced single top quarks correctly.
>
>
The polarization of single top quarks generated by Madevent was analysed. I looked at the t- as well as the s- production channel. For the t-channel the spin correlation distributions are as expected, but the s-channel distribution in the optimal basis doesn’t show the expected full polarization. Therefore I compared my results with two Tevatron data sets, one set generated by Madevent, the other one a leading order calculation with the ONETOP generator. This comparison leads to the presumption that Madevent cannot generate the polarization of s-channel produced single top quarks correctly.
  The application of cuts lead to the expected impact on the shape of the spin correlation distributions.
Revision 15
08 Jan 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008
Added:
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Single Top Polarization

 

1. Summary of what I did before Christmas:
Revision 14
08 Jan 2008 - Main.SarahHeim
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META TOPICPARENT name="WebHome"
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META FILEATTACHMENT attachment="single_top_polarization.pdf" attr="" comment="" date="1199819271" name="single_top_polarization.pdf" path="single_top_polarization.pdf" size="834972" stream="single_top_polarization.pdf" user="Main.SarahHeim" version="1"
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META TOPICPARENT name="WebHome"
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META FILEATTACHMENT attachment="single_top_polarization.pdf" attr="" comment="" date="1199819271" name="single_top_polarization.pdf" path="single_top_polarization.pdf" size="834972" stream="single_top_polarization.pdf" user="Main.SarahHeim" version="1"
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META FILEATTACHMENT attachment="t-channel.jpg" attr="" comment="" date="1199736463" name="t-channel.jpg" path="t-channel.jpg" size="6944" stream="t-channel.jpg" user="Main.SarahHeim" version="1"
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META TOPICPARENT name="WebHome"
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Single Top Polarization

  1. Outline
  2. Data
  3. Comparison neutrino and positron energy
  4. Analysis of Polarization in Helicity basis and Optimal basis
  5. Comparison with Tevatron data
  6. Application of cuts
  7. Reference
 
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t-channel.jpg
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  1. Summary of what I did before Christmas:

The polarization of single top quarks generated by Madevent [1] was analysed. I looked at the t- as well as the s- production channel. For the t-channel the spin correlation distributions are as expected, but the s-channel distribution in the optimal basis doesn’t show the expected full polarization. Therefore I compared my results with two Tevatron data sets, one set generated by Madevent [1], the other one a leading order calculation with the ONETOP generator. This comparison leads to the presumption that Madevent [1] cannot generate the polarization of s-channel produced single top quarks correctly. The application of cuts lead to the expected impact on the shape of the spin correlation distributions.
 

META FILEATTACHMENT attachment="t-channel.jpg" attr="" comment="" date="1199736463" name="t-channel.jpg" path="t-channel.jpg" size="6944" stream="t-channel.jpg" user="Main.SarahHeim" version="1"
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META TOPICPARENT name="WebHome"
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-- SarahHeim - 07 Jan 2008
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-- SarahHeim - 07 Jan 2008
 

Single Top Polarization

  1. Outline
  2. Data
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META TOPICPARENT name="WebHome"
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-- SarahHeim - 07 Jan 2008
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-- SarahHeim - 07 Jan 2008
 

Single Top Polarization

  1. Outline
  2. Data
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META TOPICPARENT name="WebHome"
-- SarahHeim - 07 Jan 2008

Single Top Polarization

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  1. Application of cuts
  2. Reference
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META FILEATTACHMENT attachment="t-channel.jpg" attr="" comment="" date="1199736463" name="t-channel.jpg" path="t-channel.jpg" size="6944" stream="t-channel.jpg" user="Main.SarahHeim" version="1"
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Single Top Polarization

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  1. Application of cuts
  2. Reference

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META FILEATTACHMENT attachment="t-channel.jpg" attr="" comment="" date="1199736463" name="t-channel.jpg" path="t-channel.jpg" size="6944" stream="t-channel.jpg" user="Main.SarahHeim" version="1"
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  1. Application of cuts
  2. Reference

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Single Top Polarization

  1. Outline
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  1. Outline
  2. Data
  3. Comparison neutrino and positron energy
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  1. Analysis of Polarization in Helicity basis and Optimal basis
  2. Comparison with Tevatron data
  3. Application of cuts
  4. Reference

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Single Top Polarization

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  1. Outline
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  -- SarahHeim - 07 Jan 2008
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Single Top Polarization

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