Single spin asymmetry

From RHIC Spin Group

Last modified by Dmitri Smirnov on 16-08-2012

Measurements of in pp —> pp

~1990, E704 at FNAL, √s = 19.4 GeV

  • Published References#Akchurin:1993xd
  • First measurement of in the CNI region
  • 200 GeV/c polarized proton beam obtained from the decay of hyperons
Pp ANvst s019.4 E704 AN.png Pp ANvst s019.4 E704 ell.png

2003, PP2PP at BNL (RHIC Run 3), √s = 200 GeV

  • Published References#Bultmann:2005na
  • Re r5 = −0.033 ± 0.035 and Im r5 = −0.43 ± 0.56
Pp ANvst s200.0 pp2pp 2003 AN.png Pp ANvst s200.0 pp2pp 2003 ell.png

2004, H-jet at BNL (RHIC Run 4), √s = 13.7 GeV

  • Published References#Okada:2005gu
  • 100 GeV/c polarized proton beam on H-jet target
  • Re r5 = −0.0008 ± 0.0091 and Im r5 = −0.015 ± 0.029
Stat. only Pp ANvst s013.7 Hjet 2004 100GeV AN.png Pp ANvst s013.7 Hjet 2004 100GeV ell.png
Stat. + Syst. Pp ANvst s013.7 Hjet 2004 100GeV toterr AN.png Pp ANvst s013.7 Hjet 2004 100GeV toterr ell.png

2004, H-jet at BNL (RHIC Run 4), √s = 6.8 GeV

  • Published References#Alekseev:2009zza also includes results for double spin asymmetry
  • 24 GeV/c polarized proton beam on H-jet target
  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sigma_\text{tot} = 38.4~\text{mb}}
Stat. only Pp ANvst s006.8 Hjet 2004 24GeV AN.png Pp ANvst s006.8 Hjet 2004 24GeV ell.png
Stat. + Syst. Pp ANvst s006.8 Hjet 2004 24GeV toterr AN.png Pp ANvst s006.8 Hjet 2004 24GeV toterr ell.png

2009, H-jet at BNL (RHIC Run 9), √s = 7.7 GeV

  • SPIN 2010
  • 31 GeV/c polarized proton beam on H-jet target
  • Failed to parse (syntax error): {\displaystyle \operatorname{Re}\, r_5 = −0.055 \pm x.x, \operatorname{Im}\, r_5 = −0.016 \pm x.x}

These data are from Sasha. I don't have the numbers to check the fits

Spin2010 s007.7 Hjet 31GeV AN.png Spin2010 s007.7 Hjet 31GeV ell.png
x300px x300px

2009, H-jet at BNL (RHIC Run 9), √s = 13.7 GeV

  • 100 GeV/c polarized proton beam on H-jet target
Blue Pp ANvst s013.7 Hjet 2009 100GeV blu AN.png Pp ANvst s013.7 Hjet 2009 100GeV blu ell.png
Yellow Pp ANvst s013.7 Hjet 2009 100GeV yel AN.png Pp ANvst s013.7 Hjet 2009 100GeV yel ell.png

2009, H-jet at BNL (RHIC Run 9), √s = 21.7 GeV

  • SPIN 2010
  • 250 GeV/c polarized proton beam on H-jet target
  • Failed to parse (syntax error): {\displaystyle \operatorname{Re}\, r_5 = −0.002 \pm x.x, \operatorname{Im}\, r_5 = −0.005 \pm x.x}

These data are from Sasha. I don't have the numbers to check the fits

Spin2010 s021.7 Hjet 250GeV AN.png Spin2010 s021.7 Hjet 250GeV ell.png
x300px x300px

2009, PP2PP at STAR BNL (RHIC Run 9), √s = 200 GeV

  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sqrt{s} = 200~\text{GeV}}
  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sigma_\text{tot} = 51.6~\text{mb}, \rho = 0.13}
Stat. Pp ANvst s200.0 pp2pp 2009 AN.png Pp ANvst s200.0 pp2pp 2009 ell.png
Stat. + Syst. Pp ANvst s200.0 pp2pp 2009 toterr AN.png Pp ANvst s200.0 pp2pp 2009 toterr ell.png

2011, H-jet at BNL (RHIC Run 11), √s = 21.7 GeV

  • 250 GeV beams
  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sqrt{s} = 21.7~\text{GeV}}
Pp ANvst s021.7 Hjet 2011 250GeV AN.png Pp ANvst s021.7 Hjet 2011 250GeV ell.png

2012, H-jet at BNL (RHIC Run 12), √s = 6.8 GeV

Pp ANvst s006.8 Hjet 2012 24GeV AN.png Pp ANvst s006.8 Hjet 2012 24GeV ell.png

2012, H-jet at BNL (RHIC Run 12), √s = 13.7 GeV

  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sqrt{s} = 13.7~\text{GeV}}
Pp ANvst s013.7 Hjet 2012 100GeV AN.png Pp ANvst s013.7 Hjet 2012 100GeV ell.png


2012, H-jet at BNL (RHIC Run 12), √s = 21.9 GeV

Pp ANvst s021.9 Hjet 2012 255GeV AN.png Pp ANvst s021.9 Hjet 2012 255GeV ell.png

Measurements of in pC —> pC

  1. E950 at AGS, BNL (2002), References#Tojo:2002wb
    • Re r5 = −0.088 ± 0.058 and Im r5 = −0.161 ± 0.226


  2. p-Carbon polarimeter at RHIC, BNL (2004) = 100 GeV (unpublished)

More Reading


Last modified by Dmitri Smirnov on 16-08-2012