Measurement of pi- p ---> pi0 n in the vicinity of the eta threshold

Starostin, A. ; Prakhov, S. ; Nefkens, B.M.K. ; et al.
Phys.Rev.C 72 (2005) 015205, 2005.
Inspire Record 688197 DOI 10.17182/hepdata.25171

We report a new measurement of the differential cross section for π−p→π0n from pπ=649 to 752 MeV/c, which is around the opening of the η channel (685 MeV/c). Our data support the main features of the π−p charge-exchange differential cross sections generated by the SAID πN partial-wave analysis. The opening of the η channel has a clear effect on the shape of the excitation function for dσ(π−p→π0n), which is most noticeable in the backward direction.

9 data tables

Differential cross section for incident pion momentum 649, 654 and 657 MeV.

Differential cross section for incident pion momentum 661, 666 and 669 MeV.

Differential cross section for incident pion momentum 673, 678 and 681 MeV.

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Differential cross section of the pion nucleon charge-exchange reaction pi- p --> pi0 n in the momentum range from 148-MeV/c to 323-MeV/c.

The Crystal Ball collaboration Sadler, M.E. ; Kulbardis, A. ; Abaev, V. ; et al.
Phys.Rev.C 69 (2004) 055206, 2004.
Inspire Record 646714 DOI 10.17182/hepdata.31725

Measured values of the differential cross section for pion-nucleon charge exchange are presented at momenta 148, 174, 188, 212, 238, 271, 298, and 323 MeV/c, a region dominated by the Delta resonance. Complete angular distributions were obtained using the Crystal Ball detector at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL). Statistical uncertainties of the differential cross sections are typically 2-6%, exceptions being the results at the lowest momentum and at the most forward measurements of the five lowest momenta. We estimate the systematic uncertainties to be 3-6%.

3 data tables

The errors shown are statistical only.

The errors shown are statistical only.

The total charge-exchange reaction cross section as a function of pion momentum obtained by integrating the differential cross sections. The errors shown are the total and statistical errors.


Measurement of Polarization in $\pi^- p \to \pi^0n$ and $\pi^-p \to \eta n$

Drobnis, D.D. ; Lales, J. ; Lamb, R.C. ; et al.
Phys.Rev.Lett. 20 (1968) 274-278, 1968.
Inspire Record 942917 DOI 10.17182/hepdata.21731

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6 data tables

No description provided.

No description provided.

No description provided.

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