Max results
Sort by Reverse order

Showing 10 of 10000 results

Date

MEASUREMENT OF THE POLARIZATION H PARAMETER IN REACTION GAMMA P ---> PI+ N WITH 320-MEV PHOTONS. (IN RUSSIAN)

Belyaev, A.A. ; Getman, V.A. ; Glamazdin, A.V. ; et al.
Yad.Fiz. 43 (1986) 1469-1471, 1986.
Inspire Record 238218 DOI 10.17182/hepdata.17579

None

1 data table
Table 1

No description provided.


CROSS-SECTIONS OF EXCLUSIVE REACTIONS IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

Bogolyubsky, M.Yu. ; Borovikov, A.A. ; Bravina, L.V. ; et al.
Yad.Fiz. 43 (1986) 350-357, 1986.
Inspire Record 231557 DOI 10.17182/hepdata.17566

None

1 data table
Table 1

No description provided.


IRREGULARITIES IN ANGULAR DISTRIBUTION OF CUMULATIVE PARTICLES NEAR 180-DEGREES IN LAB

Vorobev, L.S. ; Gavrilov, V.B. ; Goryainov, N.A. ; et al.
Sov.J.Nucl.Phys. 44 (1986) 908-911, 1986.
Inspire Record 240060 DOI 10.17182/hepdata.17538

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Neutron rms radius and electric polarizability from data on the interaction of slow neutrons with bismuth

Aleksandrov, Yu.A. ; Vrana, M. ; Manrique, Garcia J. ; et al.
Sov.J.Nucl.Phys. 44 (1986) 900-902, 1986.
Inspire Record 243762 DOI 10.17182/hepdata.17560

None

1 data table
Table 1

No description provided.


MEASUREMENT OF THE INVERSE BETA DECAY CROSS-SECTION BY MEANS OF SCINTILLATION DETECTOR AT THE ROVNO APS. (IN RUSSIAN)

Afonin, A.I. ; Bogatov, S.A. ; Borovoi, A.A. ; et al.
Yad.Fiz. 42 (1985) 1138-1145, 1985.
Inspire Record 227725 DOI 10.17182/hepdata.17562

None

1 data table
Table 1

No description provided.


Determination of Proton Nucleon Analyzing Powers and Spin Rotation Depolarization Parameters at 500-{MeV}

Marshall, J.A. ; Barlett, M.L. ; Fergerson, R.W. ; et al.
Phys.Rev.C 34 (1986) 1433-1438, 1986.
Inspire Record 240068 DOI 10.17182/hepdata.26283

500 MeV p→+p elastic and quasielastic, and p→+n quasielastic, analyzing powers (Ay) and spin-rotation-depolarization parameters (DSS, DSL, DLS, DLL, DNN) were determined for center-of-momentum angular ranges 6.8°–55.4° (elastic) and 22.4°–55.4° (quasielastic); liquid hydrogen and deuterium targets were used. The p→+p elastic and quasielastic results are in good agreement; both the p→+p and p→+n parameters are well described by current phase shift solutions.

6 data tables
Table 1

The elastic P P analysing power at 500 MeV incident proton energy. There is an additional overall normalization uncertainty of 1 PCT.

Table 2

The spin depolarization and spin rotation parameters in 500 MeV P P elastic interactions. Additional normalization uncertainty of 1 PCT (2 PCT for DLL and DLS).

Table 3

The elastic P P analysing power at 500 MeV incident proton energy. There is an additional overall normalization uncertainty of 1 PCT.

More…

Measurement of the Spin Correlation Parameters A(ll) and A(sl) for the Reaction $P P \to D \pi^+$ in the Energy Region 500-{MeV} - 800-{MeV}

Barlow, D.B. ; Saha, A. ; Seth, K.K. ; et al.
Phys.Rev.C 37 (1988) 1977-1986, 1988.
Inspire Record 242361 DOI 10.17182/hepdata.26282

Angular distributions of the spin-correlation parameters Asl and All for the reaction pp→π+d have been measured at pion center-of-mass angles 40°≤θπ+*≤130° at incident energies of 500, 650, and 800 MeV. Additional measurements of All were made at 600, 700, and 750 MeV. The results of the experiment are compared with the predictions of several unified coupled-channel calculations and partial-wave analyses. While the latest partial-wave analyses were found to fit the data reasonably well, all except one of the various model predictions not only do not fit the data well, but also tend to be in disagreement with each other. The data show no clear sign of a need for proposed dibaryon resonances.

9 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

SEARCH FOR THE S MESON IN ANTI-PROTON PROTON INTERACTIONS

Fickinger, W. ; Marino, R. ; Robinson, D.K. ; et al.
Phys.Rev.D 34 (1986) 3332-3342, 1986.
Inspire Record 239036 DOI 10.17182/hepdata.26472

The interaction between antiprotons and protons has been studied in the range 1910 to 1990 MeV center-of-mass energy in a drift-chamber experiment at the Brookhaven Alternating Gradient Synchrotron. The total cross section has been determined at eleven different incident momenta, and the elastic cross section between 8 and 30 deg in the laboratory has been measured with an energy resolution of about 5 MeV. The cross section for annihilation into charged mesons has also been measured, with the same resolution. There is no evidence in any of these channels for the existence of a narrow resonance.

3 data tables
Table 1

Data are for total sample with nuclear physics calculation as described in the paper.

Table 2

Partial elastic cross sections.

Table 3

Partial annihilation cross sections.


Atomic Beam Measurement of Parity Nonconservation in Cesium

Gilbert, S.L. ; Wieman, Carl E. ;
Phys.Rev.A 34 (1986) 792-803, 1986.
Inspire Record 237319 DOI 10.17182/hepdata.26392

We present a new measurement of parity nonconservation in cesium. In this experiment, a laser excited the 6S→7S transition in an atomic beam in a region of static electric and magnetic fields. The quantity measured was the component of the transition rate arising from the interference between the parity nonconserving amplitude, scrEPNC, and the Stark amplitude, βE. Our results are ImscrEPNC/β=−1.65±0.13 mV/cm and C2p=-2±2, where C2p is the proton-axial-vector–electron-vector neutral-current coupling constant. These results are in agreement with previous less precise measurements in cesium and with the predictions of the electroweak standard model. We give a detailed discussion of the experiment with particular emphasis on the treatment and elimination of systematic errors. This experimental technique will allow future measurements of significantly higher precision.

3 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////THE UNCERTAINTY IS DOMINATED BY THE PURELY STATISTICAL CONTRIBUTION).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////THE UNCERTAINTY IS DOMINATED BY THE PURELY STATISTICAL CONTRIBUTION).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////THE UNCERTAINTY IS DOMINATED BY THE PURELY STATISTICAL CONTRIBUTION).


Lepton and pion pair production in γγ collisions measured near the threshold at DCI

Courau, A. ; Falvard, A. ; Haissinski, J. ; et al.
Nucl.Phys.B 271 (1986) 86800013 1-20, 1986.
Inspire Record 232808 DOI 10.17182/hepdata.38240

This paper reports a complete analysis of data taken at DCI to measure lepton and pion pair production close to the threshold in two-photon processes: e<sup loc="post">+</sup>e<sup loc="post">−</sup> → e<sup loc="post">+</sup>e<sup loc="post">−</sup>(e<sup loc="post">+</sup>e<sup loc="post">−</sup>, μ<sup loc="post">+</sup>μ<sup loc="post">−</sup>, π<sup loc="post">+</sup>π<sup loc="post">−</sup>). Preliminary results have been previously published including one-half of the total statistics. Final results presented here are in good agreement with QED for lepton pair production. The measured cross section for pion pair production is twice as large as that expected from Born terms only — a two standard deviation effect.

1 data table
Table 1

Normalised to number of observed electron pairs. Fully corrected for acceptance, radiative effects etc.