Precise measurement of the e+ e- ---> mu+ mu- reaction at s**(1/2) = 57.77-GeV

The VENUS collaboration Miura, M. ; Odaka, S. ; Arima, T. ; et al.
Phys.Rev. D57 (1998) 5345-5362, 1998.
Inspire Record 452097 DOI 10.17182/hepdata.27142
0 data tables match query

Charge Asymmetry of Hadron Jets and Limits on the Compositeness Scales in e$^{+} $e$^{-} \To $q$ \Bar{$q$}$ Reaction at $\Sqrt{$s$}=57$.6-{GeV}

The VENUS collaboration Abe, K. ; Amako, K. ; Arai, Y. ; et al.
Phys.Lett. B232 (1989) 425-430, 1989.
Inspire Record 281245 DOI 10.17182/hepdata.29751
0 data tables match query

Final Results on $\mu$ and Tau Pair Production by the Jade Collaboration at {PETRA}

The JADE collaboration Hegner, S. ; Naroska, B. ; Schroth, F. ; et al.
Z.Phys. C46 (1990) 547-554, 1990.
Inspire Record 284560 DOI 10.17182/hepdata.15279
0 data tables match query

A measurement of $e^+e^- \to b\bar{b}$ forward - backward charge asymmetry between $\sqrt{s} = 52$ GeV and 57-GeV

The AMY collaboration Sagawa, H. ; Lim, J. ; Abe, K. ; et al.
Phys.Rev.Lett. 63 (1989) 2341, 1989.
Inspire Record 279824 DOI 10.17182/hepdata.19996
0 data tables match query


Ronzhin, V.M. ; Fenyuk, A.B. ; Chliapnikov, P.V. ;
Yad.Fiz. 46 (1987) 1693-1700, 1987.
Inspire Record 235219 DOI 10.17182/hepdata.10527
0 data tables match query

Experimental limits on extra $Z$ bosons from $e^{+} e^{-}$ annihilation data with the VENUS detector at $\sqrt{s}$ = 50-GeV to approximately 64-GeV

The VENUS collaboration Abe, K. ; Amako, K. ; Arai, Y. ; et al.
Phys.Lett. B246 (1990) 297-305, 1990.
Inspire Record 296392 DOI 10.17182/hepdata.29664
0 data tables match query

Analysis of Z0 couplings to charged leptons

The OPAL collaboration Akrawy, M.Z. ; Alexander, G. ; Allison, J. ; et al.
Phys.Lett. B247 (1990) 458-472, 1990.
Inspire Record 297139 DOI 10.17182/hepdata.29630
0 data tables match query

Tests of the standard model and constraints on new physics from measurements of fermion pair production at 189-GeV to 209-GeV at LEP

The OPAL collaboration
Eur.Phys.J. C33 (2004) 173-212, 2004.
Inspire Record 628491 DOI 10.17182/hepdata.43174

Cross-section and angular distributions for hadronic and lepton-pair final states in e+e- collisions at centre-of-mass energies between 189 GeV and 209 GeV, measured with the OPAL detector at LEP, are presented and compared with the predictions of the Standard Model. The measurements are used to determine the electromagnetic coupling constant alphaem at LEP2 energies. In addition, the results are used together with OPAL measurements at 91-183 GeV within the S-matrix formalism to determine the gamma-Z interference term and to make an almost model-independent measurement of the Z mass. Limits on extensions to the Standard Model described by effective four-fermion contact interactions or the addition of a heavy Z boson are also presented.

0 data tables match query

A Study of charged D* production in e+ e- annihilation at an average center-of-mass energy of 58-GeV

The VENUS collaboration Hinode, F. ; Abe, K. ; Amako, K. ; et al.
Phys.Lett. B313 (1993) 245-252, 1993.
Inspire Record 353854 DOI 10.17182/hepdata.28865
0 data tables match query

DELPHI results on the Z0 resonance parameters through its hadronic and leptonic decay modes

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adami, F. ; et al.
Conference Paper, 1990.
Inspire Record 298840 DOI 10.17182/hepdata.47313
0 data tables match query


Kozma, P. ; Damdinsuren, C. ; Chultem, D. ; et al.
J.Phys. G17 (1991) 675-690, 1991.
Inspire Record 281499 DOI 10.17182/hepdata.38565
0 data tables match query

Forward cross-sections for production of D+, D0, D(s), D*+ and Lambda(c) in 250-GeV pi+-, K+-, and p - nucleon interactions

The E769 collaboration Alves, G.A. ; Amato, S. ; Anjos, J.C. ; et al.
Phys.Rev.Lett. 77 (1996) 2388-2391, 1996.
Inspire Record 418771 DOI 10.17182/hepdata.42294
0 data tables match query

Measurements of the line shape of the $Z^0$ and determination of electroweak parameters from its hadronic and leptonic decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adye, T. ; et al.
Nucl.Phys. B417 (1994) 3-57, 1994.
Inspire Record 372144 DOI 10.17182/hepdata.48413
0 data tables match query

Precise determination of the Z resonance parameters at LEP: 'Zedometry'

The OPAL collaboration
Eur.Phys.J. C19 (2001) 587-651, 2001.
Inspire Record 538108 DOI 10.17182/hepdata.49855

This final analysis of hadronic and leptonic cross-sections and of leptonic forward-backward asymmetries in e+e- collisions with the OPAL detector makes use of the full LEP1 data sample comprising 161 pb^-1 of integrated luminosity and 4.5 x 10^6 selected Z decays. An interpretation of the data in terms of contributions from pure Z exchange and from Z-gamma interference allows the parameters of the Z resonance to be determined in a model-independent way. Our results are in good agreement with lepton universality and consistent with the vector and axial-vector couplings predicted in the Standard Model. A fit to the complete dataset yields the fundamental Z resonance parameters: mZ = 91.1852 +- 0.0030 GeV, GZ = 2.4948 +- 0.0041 GeV, s0h = 41.501 +- 0.055 nb, Rl = 20.823 +- 0.044, and Afb0l = 0.0145 +- 0.0017. Transforming these parameters gives a measurement of the ratio between the decay width into invisible particles and the width to a single species of charged lepton, Ginv/Gl = 5.942 +- 0.027. Attributing the entire invisible width to neutrino decays and assuming the Standard Model couplings for neutrinos, this translates into a measurement of the effective number of light neutrino species, N_nu = 2.984 +- 0.013. Interpreting the data within the context of the Standard Model allows the mass of the top quark, mt = 162 +29-16 GeV, to be determined through its influence on radiative corrections. Alternatively, utilising the direct external measurement of mt as an additional constraint leads to a measurement of the strong coupling constant and the mass of the Higgs boson: alfa_s(mZ) = 0.127 +- 0.005 and mH = 390 +750-280 GeV.

0 data tables match query

Asymmetry in the Angular Distribution of Inclusive $\Lambda$ Baryons From $e^+ e^-$ Annihilations at $\sqrt{s}=29$-{GeV}

Abachi, S. ; Baringer, Philip S. ; Bylsma, B.G. ; et al.
Phys.Lett. B181 (1986) 403-406, 1986.
Inspire Record 18955 DOI 10.17182/hepdata.30215
0 data tables match query

Determination of $Z^0$ resonance parameters and couplings from its hadronic and leptonic decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adami, F. ; et al.
Nucl.Phys. B367 (1991) 511-574, 1991.
Inspire Record 317493 DOI 10.17182/hepdata.33016
0 data tables match query

Study of the production of $\Lambda_b^0$ and $\overline{B}^0$ hadrons in $pp$ collisions and first measurement of the $\Lambda_b^0\rightarrow J/\psi pK^-$ branching fraction

The LHCb collaboration Aaij, R. ; Adeva, Bernardo ; Adinolfi, Marco ; et al.
Chin.Phys. C40 (2016) 011001, 2016.
Inspire Record 1391317 DOI 10.17182/hepdata.75485

The product of the differential production cross-section and the branching fraction of the decay is measured as a function of the beauty hadron transverse momentum, p(T), and rapidity, y. The kinematic region of the measurements is p(T) < 20 GeV/c and 2.0 < y < 4.5. The measurements use a data sample corresponding to an integrated luminosity of 3fb(−)(1) collected by the LHCb detector in pp collisions at centre-of-mass energies in 2011 and in 2012. Based on previous LHCb results of the fragmentation fraction ratio the branching fraction of the decay is measured to bewhere the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay B̅(0) → J/ψK̅*(892)(0), and the fourth is due to the knowledge of . The sum of the asymmetries in the production and decay between and is also measured as a function of p(T) and y. The previously published branching fraction of , relative to that of , is updated. The branching fractions of are determined.

0 data tables match query

Precision measurements of the neutral current from hadron and lepton production at LEP

The OPAL collaboration Acton, P.D. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C58 (1993) 219-238, 1993.
Inspire Record 352696 DOI 10.17182/hepdata.14495
0 data tables match query

Measurement of electroweak parameters from hadronic and leptonic decays of the $Z^0$

The L3 collaboration Adeva, B. ; Adriani, O. ; Aguilar-Benitez, M. ; et al.
Z.Phys. C51 (1991) 179-204, 1991.
Inspire Record 314418 DOI 10.17182/hepdata.14940
0 data tables match query

Measurement of the $Z^0$ line shape parameters and the electroweak couplings of charged leptons

The OPAL collaboration Alexander, G. ; Allison, John ; Allport, P.P. ; et al.
Z.Phys. C52 (1991) 175-208, 1991.
Inspire Record 315269 DOI 10.17182/hepdata.14859
0 data tables match query

Study of the $e^+ e^-\to\mu^+ \mu^- \gamma$ reaction at center-of-mass energies between 54 and 64 GeV

The VENUS collaboration Yonezawa, Y. ; Abe, K. ; Amako, K. ; et al.
Phys.Lett. B264 (1991) 212-218, 1991.
Inspire Record 1389624 DOI 10.17182/hepdata.29359

The cross section and forward-backward muon charge asymmetry for the e + e − → μ + μ − γ reaction were measured to be σ =2.82±0.35 pb and A =−0.34±0.10 with the VENUS detector at TRISTAN at 〈√ s 〉=59.2GeV for an integrated luminosity of 53.5 pb −1 . The measured cross section agrees with the theoretical prediction. The asymmetry result is consistent with the electroweak prediction but not with the QED prediction at the level of 2 σ .

0 data tables match query

Peripheral Dipion Production by Pions of 12 and 18 GeV/c

Jones, Lawrence W. ; Bleuler, E. ; Caldwell, D.O. ; et al.
Phys.Rev. 166 (1968) 1405-1430, 1968.
Inspire Record 944942 DOI 10.17182/hepdata.26526
0 data tables match query

Search for a $Z^\prime$ at the $Z$ resonance

The L3 collaboration Adriani, O. ; Aguilar-Benitez, M. ; Ahlen, S.P. ; et al.
Phys.Lett. B306 (1993) 187-196, 1993.
Inspire Record 355489 DOI 10.17182/hepdata.28919
0 data tables match query

Precision study of the eta He-3 system using the dp ---> He-3 eta reaction

Mersmann, T. ; Khoukaz, A. ; Buscher, M. ; et al.
Phys.Rev.Lett. 98 (2007) 242301, 2007.
Inspire Record 743387 DOI 10.17182/hepdata.31493

The differential and total cross sections for the d+p->3He+eta reaction have been measured in a high precision high statistics COSY-ANKE experiment near threshold using a continuous beam energy ramp up to an excess energy Q of 11.3 MeV with essentially 100% acceptance. The kinematics allowed the mean value of Q to be determined to about 9 keV. Evidence is found for the effects of higher partial waves for Q>4 MeV. The very rapid rise of the total cross section to its maximum value within 0.5 MeV of threshold implies a very large eta-3He scattering length and hence the presence of a quasi-bound state extremely close to threshold.

0 data tables match query

Measurement of the dp ---> He-3 eta reaction near threshold

Smyrski, J. ; Adam, H.-H. ; Budzanowski, A. ; et al.
Phys.Lett. B649 (2007) 258-262, 2007.
Inspire Record 745085 DOI 10.17182/hepdata.31470

Total and differential cross sections for the dp --> 3He eta reaction have been measured near threshold for 3He center-of-mass momenta in the range from 17.1 MeV/c to 87.5 MeV/c. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target detecting the 3He ejectiles with the COSY-11 facility. The forward-backward asymmetries of the differential cross sections deviate clearly from zero for center-of-mass momenta above 50 MeV/c indicating the presence of higher partial waves in the final state. Below 50 MeV/c center-of-mass momenta a fit of the final state enhancement factor to the data of the total cross sections results in the 3He eta scattering length of a = |2.9 +/- 0.6| + i (3.2 +/- 0.4) fm.

0 data tables match query