Kechechian, A.O.
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MEASUREMENT OF TOTAL pi0 PHOTOPRODUCTION CROSS-SECTION ON THE NUCLEI Be-9, C-12, O-16 IN THE ENERGY RANGE E (gamma) = 0.25-GeV - 1-GeV WITHOUT CHARGED PARTICLES IN FINAL STATE

Arakelian, E.A. ; Bayatian, G.L. ; Grigorian, N.K. ; et al.
Sov.J.Nucl.Phys. 38 (1983) 886, 1983.
Inspire Record 184638 DOI 10.17182/hepdata.17672

None

2 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).


Measurement of Total Hadronic Photoproduction Cross-section in $^{9}$Be, $^{12}$C, $^{16}$O, $^{64}$Cu Nuclei in the Photon Energy Range $e \gamma$ = (0.25-{GeV} - 2.7-{GeV})

Arakelian, E.A. ; Bayatian, G.L. ; Grigorian, N.K. ; et al.
Sov.J.Nucl.Phys. 38 (1983) 589, 1983.
Inspire Record 184631 DOI 10.17182/hepdata.17736

None

1 data table
Table 1

No description provided.


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

Afonasev, V.N. ; Borisov, V.S. ; Borodina, I.N. ; et al.
Yad.Fiz. 40 (1984) 34-42, 1984.
Inspire Record 215359 DOI 10.17182/hepdata.2554

None

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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High $p_T$ Deuteron and Anti-deuteron Production in $p p$ and $p$ a Collisions at 70-{GeV}

Abramov, V.V. ; Baldin, B.Yu. ; Buzulutskov, A.F. ; et al.
Sov.J.Nucl.Phys. 45 (1987) 845, 1987.
Inspire Record 230030 DOI 10.17182/hepdata.40804

None

8 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////DUE TO ABSORPTION CORRECTIONS//THE CORRECTION TO THE RATIO DEUT/P DUE TO DIFFERENCE OF PARTICLE ABSORPTION IN CHERENKOV COUNTERS WERE DETERMINED EXPERIMENTALLY (IN THE RANGE 6-45 PCT). THERE WAS THE CORRECTION OF ABOUT 19 PCT FOR ABSORPTION IN THE OTHER PARTS OF THE SPECTROMETER).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////DUE TO ABSORPTION CORRECTIONS//THE CORRECTION TO THE RATIO DEUT/P DUE TO DIFFERENCE OF PARTICLE ABSORPTION IN CHERENKOV COUNTERS WERE DETERMINED EXPERIMENTALLY (IN THE RANGE 6-45 PCT). THERE WAS THE CORRECTION OF ABOUT 19 PCT FOR ABSORPTION IN THE OTHER PARTS OF THE SPECTROMETER).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////DUE TO ABSORPTION CORRECTIONS//THE CORRECTION TO THE RATIO DEUT/P DUE TO DIFFERENCE OF PARTICLE ABSORPTION IN CHERENKOV COUNTERS WERE DETERMINED EXPERIMENTALLY (IN THE RANGE 6-45 PCT). THERE WAS THE CORRECTION OF ABOUT 19 PCT FOR ABSORPTION IN THE OTHER PARTS OF THE SPECTROMETER).

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MEASUREMENT OF THE CROSS-SECTION OF FORWARD COMPTON SCATTERING ON He-4 NUCLEI AT E (gamma) = 1.8-GeV + 3.8-GeV

Aleksanian, A.S. ; Babaian, G.E. ; Voskanian, A.V. ; et al.
Sov.J.Nucl.Phys. 45 (1987) 628, 1987.
Inspire Record 236051 DOI 10.17182/hepdata.18431

None

3 data tables
Table 1

MODEL DEPENDENT ESTIMATION.

Table 2

No description provided.

Table 3

No description provided.


An Evidence for a Possible Stable Dibaryon

Shakhbazian, B.A. ; Kechechian, A.O. ; Tarasov, A.M. ;
Z.Phys.C 39 (1988) 151, 1988.
Inspire Record 238852 DOI 10.17182/hepdata.15621

A search for stableH-dibaryon ofI=0,Y=0,JP=0+ was undertaken in negative pion-, neutron-,12C-nucleus- and proton-propane interactions at 4.0, 7.0, 50.4 and 10 GeV/c, respectively, using 55 cm and 2 m propane bubble chambers. This technique permite one to examine the whole range of possibleH-mass value. In the range ofMH>2MΛ=2231.2 MeV/c2 an enhancement ofMΛΛ=(2365.3±9.6) MeV/c2, ΓΛΛ=(47.2±15.1) MeV/c2 with production cross section σ=(24.2±7.0) μb per carbon nucleus was found. The mass rangeMΣ−p

1 data table
Table 1

Claime of DIBARYON(S=-2) with mass M=(2365.3+-9.6) MeV and width G=(47.2+-15.1) MeV.


First measurement of the left-right cross-section asymmetry in Z boson production by e+ e- collisions

The SLD collaboration Abe, K. ; Abt, I. ; Acton, P.D. ; et al.
Phys.Rev.Lett. 70 (1993) 2515-2520, 1993.
Inspire Record 352667 DOI 10.17182/hepdata.19765

We present the first measurement of the left-right cross section asymmetry (ALR) for Z boson production by e+e− collisions. The measurement was performed at a center-of-mass energy of 91.55 GeV with the SLD detector at the SLAC Linear Collider which utilized a longitudinally polarized electron beam. The average beam polarization was (22.4±0.6)%. Using a sample of 10 224 Z decays, we measure ALR to be 0.100±0.044(stat)±0.004(syst), which determines the effective weak mixing angle to be sin2θWeff=0.2378 ±0.0056(stat)±0.0005(syst).

2 data tables
Table 1

R and L refer to Right and Left handed beam polarization.

Table 2

Effective weak mixing angle.


Precise Measurement of the Left-Right Cross Section Asymmetry in $Z$ Boson Production by $\ee$ Collisions

The SLD collaboration Abe, K. ; Abt, I. ; Ash, W.W. ; et al.
Phys.Rev.Lett. 73 (1994) 25-29, 1994.
Inspire Record 373007 DOI 10.17182/hepdata.19681

We present a precise measurement of the left-right cross section asymmetry ($A_{LR}$) for $Z$ boson production by $\ee$ collisions. The measurement was performed at a center-of-mass energy of 91.26 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (63.0$\pm$1.1)%. Using a sample of 49,392 $\z0$ decays, we measure $A_{LR}$ to be 0.1628$\pm$0.0071(stat.)$\pm$0.0028(syst.) which determines the effective weak mixing angle to be $\swein=0.2292\pm0.0009({\rm stat.})\pm0.0004({\rm syst.})$.}

2 data tables
Table 1

The observed, corrected, asymmetry. L and R refer to the left and right handed beam polarizations.

Table 2

The left-right asymmetry and effective weak mixing angle corrected to the pole energy value, taking into account photon exchange and electro weak interferences. L and R refer to left and right beam polarizations.


A Large Solid Angle Study of Pion Absorption on He3

The LADS collaboration Alteholz, T. ; Androic, D. ; Backenstoss, G. ; et al.
Phys.Rev.Lett. 73 (1994) 1336-1339, 1994.
Inspire Record 372679 DOI 10.17182/hepdata.19679

Measurements have been made of pi+ absorption on He3 at T_pi+ = 118, 162, and 239 MeV using the Large Acceptance Detector System (LADS). The nearly 4pi solid angle coverage of this detector minimizes uncertainties associated with extrapolations over unmeasured regions of phase space. The total absorption cross section is reported. In addition, the total cross section is divided into components in which only two or all three nucleons play a significant role in the process. These are the first direct measurements of the total and three nucleon absorption cross sections.

2 data tables
Table 1

ABSORPTION CROSS SECTION.

Table 2

ABSORPTION CROSS SECTION.


Observation of the top quark

The D0 collaboration Abachi, S. ; Abbott, B. ; Abolins, M. ; et al.
Phys.Rev.Lett. 74 (1995) 2632-2637, 1995.
Inspire Record 393099 DOI 10.17182/hepdata.42452

The DO collaboration reports on a search for the Standard Model top quark in pbar-p collisions at Sqrt(s)=1.8TeV at the Fermilab Tevatron, with an integrated luminosity of approximately 50pb-1. We have searched for t-tbar production in the dilepton and single-lepton decay channels, with and without tagging of b-quark jets. We observed 17 events with an expected background of 3.8+/-0.6 events. The probability for an upward fluctuation of the background to produce the observed signal is 2.0E-6 (equivalent to 4.6 standard deviations). The kinematic properties of the excess events are consistent with top quark decay. We conclude that we have observed the top quark and measure its mass to be 199~+19_21 (stat.)+/- 22 (syst.)GeV/c**2 and its production cross section to be 6.4 +/- 2.2 pb.

1 data table
Table 1

Cross section refers to top quark mass equal 199. (+19, -21, +- 22) GeV.