HEPData Search

Measurements of the differential cross section for π − d elastic scattering in the backward angular region (−1 ⩽ cos θ cms ⩽ −0.98) are presented. These measurements were made at nine incident pion momenta P π ranging from 1.75 to 3.09 GeV/ c and at the largest values of q 2 [up to 7 (GeV/ c ) 2 ] ever reached experimentally; here q 2 is the momentum transfer squared. The differential cross section was found to decrease rapidly with increasing momentum d σ d Ω cms (180°) ∼ P −15.7 π , d σ d t ∼ (q 2 ) −12.8 . The data are compared with predictions of Regge and quark bag models.

1 data table

Table 1

Statistical errors only.

Complete angular distribution measurements of two-body deuteron photodisintegration between 0.5-GeV and 3-GeV.

The CLAS collaboration Mirazita, M. ; Ronchetti, F. ; Rossi, P. ; et al.

Phys.Rev.C 70 (2004) 014005, 2004.

Inspire Record 650821 DOI 10.17182/hepdata.31633

Nearly complete angular distributions of the two-body deuteron photodisintegration differential cross section have been measured using the CLAS detector and the tagged photon beam at JLab. The data cover photon energies between 0.5 and 3.0 GeV and center-of-mass proton scattering angles 10-160 degrees. The data show a persistent forward-backward angle asymmetry over the explored energy range, and are well-described by the non-perturbative Quark Gluon String Model.

4 data tables

Table 1

Angular distributions of the photodisintegration cross section for angle between 10 and 50 degrees in the CM.

Table 2

Angular distributions of the photodisintegration cross section for angle between 50 and 90 degrees in the CM.

Table 3

Angular distributions of the photodisintegration cross section for angle between 90 and 130 degrees in the CM.

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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

Table 1

The errors shown are statistical only.

Table 2

The errors shown are statistical only.

Table 3

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.

Elastic Scattering of Photon by Protons in the Low-Energy Region

Baranov, P.S. ; Buinov, G.M. ; Godin, V.G. ; et al.

Yad.Fiz. 21 (1975) 689-698, 1975.

Inspire Record 102948 DOI 10.17182/hepdata.19097

None

2 data tables

Table 1

Axis error includes +- 1/1 contribution.

Table 2

Axis error includes +- 1/1 contribution.

Elastic scattering of 3.15 GeV/ c positive pions on protons at 180°

Savin, I.A. ; Vovenko, A.S. ; Gus'kov, B.N. ; et al.

Phys.Lett. 17 (1965) 68-69, 1965.

Inspire Record 1389652 DOI 10.17182/hepdata.30250

None

1 data table

Table 1

No description provided.

Elastic scattering of low energy photons by protons and electromagnetic polarizability of proton

Baranov, P.S. ; Buinov, G.M. ; Godin, V.G. ; et al.

Pisma Zh.Eksp.Teor.Fiz. 19 (1974) 777-780, 1974.

Inspire Record 96876 DOI 10.17182/hepdata.70437

None

3 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////UNCERTAINTY IN DATA PROCESSING).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////UNCERTAINTY IN DATA PROCESSING).

Table 3

No description provided.

Eta photoproduction on the proton for photon energies from 0.75-GeV to 1.95-GeV

The CLAS collaboration Dugger, M. ; Ritchie, B.G. ; Ball, J. ; et al.

Phys.Rev.Lett. 89 (2002) 222002, 2002.

Inspire Record 603904 DOI 10.17182/hepdata.19406

Differential cross sections for γp→ηp have been measured with tagged real photons for incident photon energies from 0.75 to 1.95 GeV. Mesons were identified by missing mass reconstruction using kinematical information for protons scattered in the production process. The data provide the first extensive angular distribution measurements for the process above W=1.75 GeV. Comparison with preliminary results from a constituent quark model support the suggestion that a third S11 resonance with mass ∼1.8 GeV couples to the ηN channel.

6 data tables

Table 1

Cross sections for photon energies 0.775 to 0.925 GeV.

Table 2

Cross sections for photon energies 0.975 to 1.125 GeV.

Table 3

Cross sections for photon energies 1.175 to 1.325 GeV.

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High-precision Measurements of piP Elastic Differential Cross Sections in the Second Resonance Region

The EPECUR collaboration Alekseev, I.G. ; Andreev, V.A. ; Bordyuzhin, I.G. ; et al.

Phys.Rev.C 91 (2015) 025205, 2015.

Inspire Record 1323450 DOI 10.17182/hepdata.67659

Cross sections for pi+-p elastic scattering have been measured to high precision, for beam momenta between 800 and 1240 MeV/c, by the EPECUR Collaboration, using the ITEP proton synchrotron. The data precision allows comparisons of the existing partial-wave analyses (PWA) on a level not possible previously. These comparisons imply that updated PWA are required.

249 data tables

Table 1

Differential cross section of elastic $\pi^+$p-scattering at P= 800.25 MeV/c. Errors shown are statistical only.

Table 2

Differential cross section of elastic $\pi^+$p-scattering at P= 803.75 MeV/c. Errors shown are statistical only.

Table 3

Differential cross section of elastic $\pi^+$p-scattering at P= 807.25 MeV/c. Errors shown are statistical only.

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Investigation of the reaction pi- p ---> p x- at the momentum of 3.25 gev/c with high momentum transfer

Baloshin, O.N. ; Vladimirskii, V.V. ; Dukhovskoi, I.A. ; et al.

Yad.Fiz. 14 (1971) 131-133, 1971.

Inspire Record 69451 DOI 10.17182/hepdata.19279

None

1 data table

Table 1

No description provided.

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ANTI-PROTON INTERACTION CROSS-SECTIONS WITH C, AL, TI, AND CD NUCLEI IN THE REGION OF 1.5-GEV/C. (IN RUSSIAN)

BACKWARD PION - DEUTERON ELASTIC SCATTERING FROM 1.75-GeV/c TO 3.1-GeV/c

Complete angular distribution measurements of two-body deuteron photodisintegration between 0.5-GeV and 3-GeV.

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.

Elastic Scattering of Photon by Protons in the Low-Energy Region

Elastic scattering of 3.15 GeV/ c positive pions on protons at 180°

Elastic scattering of low energy photons by protons and electromagnetic polarizability of proton

Eta photoproduction on the proton for photon energies from 0.75-GeV to 1.95-GeV

High-precision Measurements of piP Elastic Differential Cross Sections in the Second Resonance Region

Investigation of the reaction pi- p ---> p x- at the momentum of 3.25 gev/c with high momentum transfer