Transverse single-spin asymmetry of midrapidity $\pi^{0}$ and $\eta$ mesons in $p$+Au and $p$+Al collisions at $\sqrt{s_{_{NN}}}=$ 200 GeV

The PHENIX collaboration Abdulameer, N.J. ; Acharya, U. ; Aidala, C. ; et al.
Phys.Rev.D 107 (2023) 112004, 2023.
Inspire Record 2641468 DOI 10.17182/hepdata.139098

Presented are the first measurements of the transverse single-spin asymmetries ($A_N$) for neutral pions and eta mesons in $p$+Au and $p$+Al collisions at $\sqrt{s_{_{NN}}}=200$ GeV in the pseudorapidity range $|\eta|<$0.35 with the PHENIX detector at the Relativistic Heavy Ion Collider. The asymmetries are consistent with zero, similar to those for midrapidity neutral pions and eta mesons produced in $p$+$p$ collisions. These measurements show no evidence of additional effects that could potentially arise from the more complex partonic environment present in proton-nucleus collisions.

2 data tables

Data from Figure 2 (a) of the $\pi^{0}$ transverse single-spin asymmetry in $\sqrt{s_{NN}}=200$ GeV $p^{\uparrow}+$Au and $p^{\uparrow}+$Al collisions as a function of $p_{T}$.

Data from Figure 2 (b) of the $\eta$ transverse single-spin asymmetry in $\sqrt{s_{NN}}=200$ GeV $p^{\uparrow}+$Au and $p^{\uparrow}+$Al collisions as a function of $p_{T}$.


Zero-degree differential cross-sections and DNN values for the O-17, O-18 (,) F-17, F-18 reactions at E(p) = 118 MeV

van Heerden, I.J. ; Palarczyk, M. ; Wang, X. ; et al.
Phys.Rev.C 59 (1999) 1488-1496, 1999.
Inspire Record 516334 DOI 10.17182/hepdata.25605

We present zero-degree differential cross sections and transverse spin-transfer coefficients DNN(0°) for the 17,18O(p→,n→)17,18F reactions at Ep=118 MeV. For the transition to the 17F(g.s.) to which several multipoles contribute, the measured DNN(0°)=−0.13±0.05 is used to separate the Fermi and Gamow-Teller contributions at 0°. The empirical Gamow-Teller strengths and the Fermi strengths are employed to estimate the solar neutrino absorption cross section in 17O and 18O.

2 data tables

No description provided.

No description provided.


d, r, r-prime and p in p p Elastic Scattering from 209-MeV to 515-MeV

Axen, D. ; Felawka, L. ; Jaccard, S. ; et al.
Lett.Nuovo Cim. 20 (1977) 151-156, 1977.
Inspire Record 125649 DOI 10.17182/hepdata.37405

None

5 data tables

POLARIZATION PARAMETER P(N000).

POLARIZATION PARAMETER A(00N0).

WOLFENSTEIN PARAMETER D(N0N0).

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n p elastic spin transfer measurements at 485-MeV and 635-MeV

McNaughton, K.H. ; Ambrose, D.A. ; Coffey, P. ; et al.
Phys.Rev.C 46 (1992) 47-51, 1992.
Inspire Record 342389 DOI 10.17182/hepdata.26097

We have measured the spin-transfer parameters KLL, KSL, KLS, and KSS at 635 MeV from 50° to 178° c.m. and at 485 MeV from 74° to 176° c.m. These new data have a significant impact on the phase-shift analyses. There are now sufficient data near these energies to overdetermine the elastic nucleon-nucleon amplitudes.

2 data tables

Spin transfer parameters from np elastic scattering at 635 MeV. There is an additional overall normalisation of 2 PCT.

Spin transfer parameters from np elastic scattering at 485 MeV. There is an additional overall normalisation of 2 PCT.


p p elastic scattering polarization transfer K(onno) and depolarization D(onon) between 1.94-GeV and 2.80-GeV.

Allgower, C.E. ; Ball, J. ; Barabash, L.S. ; et al.
Eur.Phys.J.C 5 (1998) 453-460, 1998.
Inspire Record 481194 DOI 10.17182/hepdata.43094

A polarized proton beam extracted from SATURNE II and the Saclay polarized proton target were used to measure the rescattering observables$K_{onno}$and

27 data tables

No description provided.

No description provided.

No description provided.

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