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Double Spin Asymmetries A_NN and A_SS at sqrt{s}=200 GeV in Polarized Proton-Proton Elastic Scattering at RHIC

The pp2pp collaboration Bultmann, S. ; Chiang, I.H. ; Chrien, R.E. ; et al.

Phys.Lett.B 647 (2007) 98-103, 2007.

Inspire Record 729168 DOI 10.17182/hepdata.31499

We present the first measurements of the double spin asymmetries A_NN and A_SS at sqrt{s}=200 GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). The data were collected in the four momentum transfer t range 0.01<|t|<0.03 (GeV/c)^2. The measured asymmetries, which are consistent with zero, allow us to estimate upper limits on the double helicity-flip amplitudes phi_2 and phi_4 at small t as well as on the difference Delta(sigma_T) between the total cross sections for transversely polarized protons with antiparallel or parallel spin orientations.

3 data tables

Table 1

Double spin asymmetries.

Table 2

Double spin asymmetries.

Table 3

T dependence of the double spin asymmetry ASS3 with statistical errors only.

First measurement of A(N) at s**(1/2) = 200-GeV in polarized proton proton elastic scattering at RHIC.

Bultmann, S. ; Chiang, I.H. ; Chrien, R.E. ; et al.

Phys.Lett.B 632 (2006) 167-172, 2006.

Inspire Record 688172 DOI 10.17182/hepdata.31570

We report on the first measurement of the single spin analyzing power (A_N) at sqrt(s)=200GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). Data points were measured in the four momentum transfer t range 0.01 < |t| < 0.03 (GeV/c)^2. Our result, averaged over the whole t-interval is about one standard deviation above the calculation, which uses interference between electromagnetic spin-flip amplitude and hadronic non-flip amplitude, the source of A_N. The difference could be explained by an additional contribution of a hadronic spin-flip amplitude to A_N.

1 data table

Table 1

The single spin analyzing power for 3 T intervals.

First measurement of proton proton elastic scattering at RHIC.

Bueltmann, Stephen L. ; Chiang, I.H. ; Chrien, R.E. ; et al.

Phys.Lett.B 579 (2004) 245-250, 2004.

Inspire Record 618968 DOI 10.17182/hepdata.31705

The first result of the pp2pp experiment at RHIC on elastic scattering of polarized protons at sqrt{s} = 200 GeV is reported here. The exponential slope parameter b of the diffractive peak of the elastic cross section in the t range 0.010 <= |t| <= 0.019 (GeV/c)^2 was measured to be b = 16.3 +- 1.6 (stat.) +- 0.9 (syst.) (GeV/c)^{-2} .

1 data table

Table 1

Measured slope of the elastic cross section.

Measurement of the carbon analyzing power in the momentum range 1.36-GeV/c to 2.02-GeV/c.

Alekseev, I.G. ; Budkovsky, P.E. ; Kanavets, V.P. ; et al.

Phys.Atom.Nucl. 62 (1999) 2024-2030, 1999.

Inspire Record 515065 DOI 10.17182/hepdata.39979

None

12 data tables

Table 1

THE CARBON THICKNESS 4.9 G/CM**2.

Table 2

THE CARBON THICKNESS 19.4 G/CM**2.

Table 3

THE CARBON THICKNESS 36.5 G/CM**2.

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Measurement of the B(d)0 oscillation frequency using kaons, leptons and jet charge

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adye, T. ; et al.

Z.Phys.C 72 (1996) 17-30, 1996.

Inspire Record 415900 DOI 10.17182/hepdata.47784

A measurement of the mass difference,Δm d , between the two physical B d

1 data table

Table 1

No description provided.

Production of a Lambda K0 pair in neutron nucleus interactions

Alekseev, A.N. ; Berezin, V.M. ; Bogdanov, E.T. ; et al.

Sov.J.Nucl.Phys. 54 (1991) 977-981, 1991.

Inspire Record 326672 DOI 10.17182/hepdata.40022

None

1 data table

Table 1

ABSENT OF AN ABSOLUTE NEUTRON FLUX NORMALIZATION DIDN'T ALLOWED TO DEFINE THE CROSS-SECTION OF LAMBDA-K0-PARE PRODUCTION,SO IT WAS DEFINED THE RELATION OF CARBON AND CUPRUM CROSS-SECTION.