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New results on n p ---> d gamma, and time-reversal invariance

Bartlett, D.F. ; Friedberg, C.E. ; Goldhagen, P.E. ; et al.
Phys.Rev.Lett. 27 (1971) 881-885, 1971.
Inspire Record 68910 DOI 10.17182/hepdata.21459

The angular distribution for the reaction n+p→d+γ has been measured at neutron energies of 475, 560, 625, and 750 MeV. Results based on 31 000 events at nine scattering angles are reported and compared with existing data for the inverse reaction, γ+d→n+p. The angular distributions are found to agree, as predicted by time-reversal invariance.

1 data table
Table 1

No description provided.


Additional data in the reaction pi+ p ---> sigma+ k+ at 1.28 and 1.41 gev/c and a test of charge independence in the center-of-mass energy range 1.820 to 2.090 gev

Kalmus, G.E. ; Borreani, G. ; Louie, J. ;
Phys.Rev.D 4 (1971) 916-918, 1971.
Inspire Record 67769 DOI 10.17182/hepdata.23075

Data at two additional π+ momenta (1.28 and 1.41 GeVc) in the reaction π+p→Σ+K+ are presented. Charge independence is tested over the c.m. energy range 1.820 to 2.090 GeV; we used our data for the Σ+K+ channel and published data for the π−p→Σ0K0 and Σ−K+ channels.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Proton-antiproton annihilation into pi+ pi- and k+ k- from 700 to 1100 mev/c

Mandelkern, M.A. ; Burns, R.R. ; Condon, P.E. ; et al.
Phys.Rev.D 4 (1971) 2658-2666, 1971.
Inspire Record 74756 DOI 10.17182/hepdata.23118

Total and differential cross sections are presented for proton-antiproton annihilation into π+π− and K+K− at six laboratory momenta between 686 and 1098 MeV/c. The two-pion final state displays moderate energy dependence in its differential cross section, but shows no evidence of any direct-channel resonances. In contrast, the two-kaon final state exhibits some behavior in the total and differential cross section suggestive of a possible direct-channel effect between 800 and 1000 MeV/c.

3 data tables
Table 1

NOTE CUT EXCLUDES LARGE FORWARD CROSS SECTION.

Table 2

LEGENDRE COEFFICIENTS NORMALIZED TO LEGN(L=0) = 0.5.

Table 3

LEGENDRE COEFFICIENTS NORMALIZED TO LEGN(L=0) = 0.5.


K+ p elastic scattering between 2.11 and 2.72 gev/c

Danysz, J.A. ; Penney, B.K. ; Stewart, B.C. ; et al.
Nucl.Phys.B 42 (1972) 29-43, 1972.
Inspire Record 75131 DOI 10.17182/hepdata.32928

Final results are presented of the analysis of the elastic channel in an exposure of 40 000 pictures at each of the four incident K + momenta 2.11, 2.31, 2.5 and 2.72 GeV/ c taken in the 1.5 m British National Hydrogen Bubble Chamber at the 8 GeV/ c proton synchrotron at the Rutherford High Energy Laboratory. Differential cross sections are presented and the results are compared with other published data. A Legendre polynomial analysis requires partial waves up to G wave at all momenta. For the backward peak, visible at each momentum, the slope and the intercept are calculated. A comparison of the forward peak is made with extrapolations from Regge models fitted at higher momenta.

12 data tables
Table 1

RESULTS DIFFER SLIGHTLY FROM THOSE PREVIOUSLY REPORTED IN J. M. BRUNET ET AL., NP B36, 45 (1972).

Table 2

No description provided.

Table 3

No description provided.

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The reaction k- p ---> lambda eta from 0.80 to 1.84 gev/c

Rader, R. ; Barloutaud, R. ; Griselin, J. ; et al.
Nuovo Cim.A 16 (1973) 178-186, 1973.
Inspire Record 86997 DOI 10.17182/hepdata.37772

We present new data on the reaction K−p→Λη from 0.80 to 1.84 GeV/c. An interpretation is attempted in terms of the formation of known hyperon resonances.

3 data tables
Table 1

THE ORIGINAL DATA AT 49 MOMENTA HAVE BEEN GROUPED INTO 27 MOMENTUM BANDS. SIG = 4*PI*(REDUCED CM K- WAVELENGTH)**2*LEG(L=0).

Table 2

DATA FURTHER GROUPED INTO 9 MOMENTUM REGIONS.

Table 3

DATA FURTHER GROUPED INTO 9 MOMENTUM REGIONS.


Properties of the inelastic k+ p reactions between 1.2 and 1.7 gev/c

Berthon, A. ; Montanet, L. ; Paul, E. ; et al.
Nucl.Phys.B 63 (1973) 54-92, 1973.
Inspire Record 83879 DOI 10.17182/hepdata.32479

The observation of 70 000 K 0 p π + events produced with K + incident momenta of 1.21, 1.29, 1.38 and 1.69 GeV/ c allows a detailed description of the production and decay of the Δ(1236) and K ∗ (892) resonances which dominate the K 0 p π + final state. No striking variations with energy are observed. The associated production of Δ and K ∗ near threshold shows striking similarities with the same production at higher energy.

22 data tables
Table 1

INCLUDING 1 PCT SYSTEMATIC ERROR ON CORRECTIONS.

Table 2

FIT 'A', ALLOWING FOR DELTA-K* INTERFERENCE (TWO OTHER FITS GIVEN IN PAPER).

Table 3

S-CHANNEL HELICITY FRAME.

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DIFFERENTIAL CROSS-SECTIONS FOR K+ p ELASTIC SCATTERING FROM 0.865-GeV/c TO 2.125-GeV/c: DATA LISTING

Abe, K. ; Barnett, B.A. ; Goldman, J.H. ; et al.
Phys.Rev.D 11 (1975) 1719-1732, 1975.
Inspire Record 81409 DOI 10.17182/hepdata.4763

We report on an experiment to obtain differential cross sections for K+p elastic scattering in the vicinity of the possible exotic baryon, the Z1*(1900). The differential cross sections are based on typically 70 000 selected events in the angular region −0.9≤cosθc.m.≤0.9 at each of 22 momenta from 0.865 to 2.125 GeV/c. The data are intended for use in partial-wave analysis to search for the Z1*.

26 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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K- n ---> sigma- eta near threshold

Chu, R.Y.L. ; Bartley, J. ; Dowd, R. ; et al.
Nuovo Cim.A 20 (1974) 35-48, 1974.
Inspire Record 96713 DOI 10.17182/hepdata.37736

The reaction K−n→Σ−η has been studied near threshold. The production angular distribution and the cross-section as a function of energy were measured. The combined angular distributions of this experiment and two previous ones suggest that aJ=1/2 amplitude dominates in Σ−η production. Our cross-section can be fitted with a Σ−1η resonance of mass 1785±12 and width 89±33, or it can be fitted in a zero-effective-range scattering approximation with a scattering length of (0.92±0.12)±i(0.04±0.28) fm.

3 data tables
Table 1

No description provided.

Table 2

CROSS SECTION NEAR THRESHOLD CORRESPONDS TO A SCATTERING LENGTH OF (0.92 +- 0.12) +- I*(0.04 +- 0.28) FM.

Table 3

PRODUCTION ANGULAR DISTRIBUTION - ASSUMED SYMMETRIC IN COS(THETA).


The pi+ p interaction at 1.2 gev/c

Berthon, A. ; Mas, J. ; Narjoux, J.L. ; et al.
Nucl.Phys.B 81 (1974) 431-444, 1974.
Inspire Record 93412 DOI 10.17182/hepdata.7945

Experimental results are presented for the available channels in the 1.2 GeV/ c π + p interaction. An isobaric model with incoherent addition of the amplitudes is used to determine the π, Δ and N ∗ abundance rates in the π + π o p final state. The multipole parameters in the density matrix of the Δ ++ are determined as functions of its production angle.

7 data tables
Table 1

No description provided.

Table 2

LEGENDRE POLYNOMIAL FIT USED TO CORRECT FOR ELASTIC EVENTS LOST FROM THE FORWARD BIN.

Table 3

No description provided.

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Experimental Results on pi- p Interactions in the Center-Of-Mass-Energy Range 1.50-GeV-1.74-GeV

Dolbeau, J. ; Neveu, M. ; Triantis, F.A. ; et al.
Nucl.Phys.B 78 (1974) 233-250, 1974.
Inspire Record 89856 DOI 10.17182/hepdata.21889

Channel cross sections, elastic differential cross sections and single pion production mass spectra and angular distributions are presented for π − p interactions, based on 139 000 events observed at six energies in the center of mass region 1.50–1.74 GeV.

10 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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