Measurement of the hadronic photon structure function at LEP-1 for (Q**2) values between 9.9-GeV**2 and 284-GeV**2

The ALEPH collaboration Barate, R. ; Decamp, D. ; Ghez, Philippe ; et al.
Phys.Lett. B458 (1999) 152-166, 1999.
Inspire Record 499917 DOI 10.17182/hepdata.49109
10 data tables

The measured values of dsig/dx from the ECAL data in the Q**2 bin 35 to 3000 GeV**2 with a mean of 284 +- 49 GeV**2.

The measured values of dsig/dx from the LCAL data in the Q**2 bin 13 to 44 GeV**2 with a mean of 20.67 +- 016 GeV**2.

The measured values of dsig/dx from the LCAL data in the Q**2 bin 6 to 13 GeV**2 with a mean of 9.93 +- 0.04 GeV**2.

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Inclusive pi+-, K+- and (p, anti-p) differential cross-sections at the Z resonance

The ALEPH collaboration Buskulic, D. ; Casper, D. ; De Bonis, I. ; et al.
Z.Phys. C66 (1995) 355-366, 1995.
Inspire Record 382179 DOI 10.17182/hepdata.48315
3 data tables

No description provided.

No description provided.

No description provided.


Measurement of the inclusive D*+- production in gamma gamma collisions at LEP

The ALEPH collaboration Heister, A. ; Schael, S. ; Barate, R. ; et al.
Eur.Phys.J. C28 (2003) 437-449, 2003.
Inspire Record 612223 DOI 10.17182/hepdata.48891

The inclusive production of D$^{*\pm}$ mesons in two-photon collisions is measured with the ALEPH detector at $\epem$ centre-of-mass energies from 183$\unit{GeV}$ to 209$\unit{GeV}$. A total of $360 \pm 27$ D$^{*\pm}$ meson events were observed from an integrated luminosity of 699\unit{pb^{-1}}$. Contributions from direct and single-resolved rocesses are separated using the ratio of the transverse momentum $p_{\rm t}^{\rm D^{*\pm}}$ of the D$^{*\pm}$ to the visible invariant mass $W_{\mathrm{vis}}$ of the event. Differential cross sections of D$^{*\pm}$ production as functions of $p_{\rm t}^{\rm D^{*\pm}}$ and the pseudorapidity $|\eta^{\rm D^{*\pm}}| $ are measured in the range $ 2\unit{GeV}/c < p_{\rm t}^{\rm D^{*\pm}} < 12\unit{GeV}/c $ and $ |\eta^{\rm D^{*\pm}}| < 1.5 $. They are compared to next-to-leading order (NLO)perturbative QCD calculations. The extrapolation of the integrated visible D$^{*\pm}$ cross section to the total charm cross section, based on the Pythia Monte Carlo program, yields $ \sigma (\epem \to \epem \ccbar)_ {=197\unit{GeV}} = 731 \pm 74_{\mathrm{stat}} \pm 47_{\mathrm{syst}} \pm 157_{\mathrm{extr}} \unit{pb} $.

7 data tables

Total extrapolated charm production cross section. The second DSYS error isdue to the uncertainty in the extrapolation.

Visible cross section with the acceptance range.

Visible cross section within the acceptance ranges for the three decay modes observed.

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Study of hadronic final states from double tagged gamma gamma events at LEP

The ALEPH collaboration Heister, A. ; Schael, S. ; Barate, R. ; et al.
2003.
Inspire Record 619958 DOI 10.17182/hepdata.49702

The interaction of virtual photons is investigated using double tagged gammagamma events with hadronic final states recorded by the ALEPH experiment at e^+e^- centre-of-mass energies between 188 and 209 GeV. The measured cross section is compared to Monte Carlo models, and to next-to-leading-order QCD and BFKL calculations.

10 data tables

Differential cross section as a function of the relative energy of the scattered electrons.

Differential cross section as a function of the polar angle THETA of the scattered electrons.

Differential cross section as a function of the virtuality Q**2 of the photons.

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Exclusive production of pion and kaon meson pairs in two photon collisions at LEP

The ALEPH collaboration Heister, A. ; Schael, S. ; Barate, R. ; et al.
Phys.Lett. B569 (2003) 140-150, 2003.
Inspire Record 626022 DOI 10.17182/hepdata.49730
4 data tables

Measured angular distribution for pion production.

Measured angular distribution for kaon production.

Measured cross section for pion production as a function of W.

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First measurement of the quark to photon fragmentation function

The ALEPH collaboration Buskulic, D. ; Casper, D. ; De Bonis, I. ; et al.
Z.Phys. C69 (1996) 365-378, 1996.
Inspire Record 398193 DOI 10.17182/hepdata.12261
16 data tables

2-jet events. Variable Z has been defined as E(gamma)/(E(gamma)+E(had)), where E(gamma) is the energy of the hard photon in 'photon-jet', E(had) is the energy of the rest hadrons in jet. Ycut is jet resolution parameter (see paper).

2-jet events. Variable Z has been defined as E(gamma)/(E(gamma)+E(had)), where E(gamma) is the energy of the hard photon in 'photon-jet', E(had) is the energy of the rest hadrons in jet. Ycut is jet resolution parameter (see paper).

2-jet events. Variable Z has been defined as E(gamma)/(E(gamma)+E(had)), where E(gamma) is the energy of the hard photon in 'photon-jet', E(had) is the energy of the rest hadrons in jet. Ycut is jet resolution parameter (see paper).

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Study of the B(s)0 anti-B(s)0 oscillation frequency using D(s)- lepton+ combinations in Z decays

The ALEPH collaboration Buskulic, D. ; De Bonis, I. ; Decamp, D. ; et al.
Phys.Lett. B377 (1996) 205-221, 1996.
Inspire Record 417261 DOI 10.17182/hepdata.52362
2 data tables

This result supersedes the previous measurement ( 1.59 +0.17 -0.15 (stat.) +-0.03 (sys.) ps ) presented in reference PL 361B, 221.

No description provided.


A Precise measurement of the average $b$ hadron lifetime

The ALEPH collaboration Buskulic, D. ; Casper, D. ; De Bonis, I. ; et al.
Phys.Lett. B369 (1996) 151-162, 1996.
Inspire Record 401554 DOI 10.17182/hepdata.52363

An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991–1993 runs of ALEPH, with the silicon vertex detector fully operational. This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 ± 0.013 ± 0.022 ps.

1 data table

No description provided.


Measurements of |V(cb)|, form-factors and branching fractions in the decays anti-B0 ---> D*+ lepton- anti-lepton-neutrino and anti-B0 ---> D+ lepton- anti-lepton-neutrino

The ALEPH collaboration Buskulic, D. ; De Bonis, I. ; Decamp, D. ; et al.
Phys.Lett. B395 (1997) 373-387, 1997.
Inspire Record 425943 DOI 10.17182/hepdata.34082
3 data tables

The formfactors are evaluated at zero recoil of D meson. Two different methods are used (see text for details). VCB is the KCM matrix element. The formfactor fitted to dependence: FF(OM) = FF(1)*(1-CONST*(OM-1)).

VCB is the KCM matrix element.

VCB is the KCM matrix element.


Measurement of the hadronic photon structure function F2(gamma)(x, Q**2) in two-photon collisions at LEP

The ALEPH collaboration Heister, A. ; Schael, S. ; Barate, R. ; et al.
Eur.Phys.J. C30 (2003) 145-158, 2003.
Inspire Record 631231 DOI 10.17182/hepdata.43218
4 data tables

Measured value of F2/ALPHAE at a mean Q**2 of 17.3 GeV**2.

Measured value of F2/ALPHAE at a mean Q**2 of 67.2 GeV**2.

Statistical correlation coefficients for the F2 measurements at Q**2 = 17.3 GeV**2.

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FRAGMENTATION IN NEUTRINO AND ANTI-NEUTRINOS CHARGED CURRENT INTERACTIONS ON PROTON AND NEUTRON

The AMSTERDAM-BERGEN-BOLOGNA-PADUA-PISA-SACLAY-TURIN collaboration Allasia, D. ; Angelini, C. ; Baldini, A. ; et al.
Z.Phys. C24 (1984) 119-131, 1984.
Inspire Record 207322 DOI 10.17182/hepdata.16217
1 data table

No description provided.


A Measurement of the photon structure function $F_2$

The AMY collaboration Sasaki, T. ; Yamagishi, Y. ; Tanaka, R. ; et al.
Phys.Lett. B252 (1990) 491-498, 1990.
Inspire Record 299056 DOI 10.17182/hepdata.29524
4 data tables

X dependence at Q**2 = 73 GeV**2 for light quark data.

X dependence at Q**2 = 73 GeV**2 for total data.

Photon structure function F2 for total data.

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Measurement of the inclusive jet cross-section in photon-photon interactions at TRISTAN

The AMY collaboration Kim, B.J. ; Nozaki, T. ; Bodek, A. ; et al.
Phys.Lett. B325 (1994) 248-256, 1994.
Inspire Record 361660 DOI 10.17182/hepdata.38388
3 data tables

No description provided.

No description provided.

No description provided.


A High Q**2 measurement of the photon structure function F2(gamma)

The AMY collaboration Sahu, S.K. ; Ebara, S. ; Nozaki, T. ; et al.
Phys.Lett. B346 (1995) 208-216, 1995.
Inspire Record 392701 DOI 10.17182/hepdata.38361
3 data tables

No description provided.

No description provided.

Errors contain both statistics and systematics.


Two photon production of omega pairs

The ARGUS collaboration Albrecht, H. ; Hamacher, T. ; Hofmann, R.P. ; et al.
Phys.Lett. B374 (1996) 265-270, 1996.
Inspire Record 403304 DOI 10.17182/hepdata.44942
1 data table

Results of maximum liklihood analysis.


Inclusive production of eta-prime (958) and f0 (975) mesons in the upsilon energy region

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Hamacher, T. ; et al.
Z.Phys. C58 (1993) 199-206, 1993.
Inspire Record 342061 DOI 10.17182/hepdata.14425
5 data tables

Direct etaprime rates per event for the continuum region (9.36 to 10.45 GeV), the UPSI(1S) (9.46 GeV), UPSI(2S)(10.02 GeV) and UPSI(4S)(10.58 GeV) regions. Data is extrapolated to the full z region.

Radiation corrected normalized cross section for F0(975) production in the continuum events.

Normalized cross section for F0(975) production in direct UPSI(1S) decays.

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Measurement of K* anti-K* production in two photon interactions

The ARGUS collaboration Albrecht, H. ; Hamacher, T. ; Hofmann, R.P. ; et al.
Eur.Phys.J. C16 (2000) 435-444, 2000.
Inspire Record 511512 DOI 10.17182/hepdata.35113
11 data tables

Cross sections for the partial waves from an analysis where the five (JP,LZ) states (0+,0), (2-,0), (2+,+-2), (2+,0) and (0-,0) are included.

Cross section obtained for the three partial waves obtained when the two with smallest amplitude in the previous table are set to zero.

Cross sections for the various final states from the 'five partial wave' analysis.

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First Observation of $\gamma \gamma \to K^*+ K^*$-

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Phys.Lett. B212 (1988) 528-532, 1988.
Inspire Record 262713 DOI 10.17182/hepdata.29893
4 data tables

No description provided.

Topological cross section.

Topological cross section.

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Observation of the Orbitally Excited $\Lambda(1520)$ Baryon in $e^+ e^-$ Annihilation

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Phys.Lett. B215 (1988) 429-434, 1988.
Inspire Record 262415 DOI 10.17182/hepdata.29875
4 data tables

Full X range uses extrapolation from fit to dsig/dz distribution.

No description provided.

UPSI(1S) DECAYS.

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First Observation of $\gamma \gamma \to \omega \rho^0$

The ARGUS collaboration Albrecht, H. ; Andam, A.A. ; Binder, U. ; et al.
Phys.Lett. B196 (1987) 101, 1987.
Inspire Record 247567 DOI 10.17182/hepdata.30104
2 data tables

Topological cross section.

OMEGA RHO0 Production cross section.


Observation of the Charmed Baryon $\Sigma(c$) in $e^+ e^-$ Annihilations

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Phys.Lett. B211 (1988) 489-492, 1988.
Inspire Record 261672 DOI 10.17182/hepdata.29913
1 data table

DATA FROM UPSI(4S) WAS EXCLUDED.


A Search for $\omega \phi$ and $\phi \phi$ Production in the Reactions $\gamma \gamma \to K^+ K^- \pi^+ \pi^- \pi^0$ and $\gamma \gamma \to 2 K^+ 2 K^-$

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Phys.Lett. B210 (1988) 273-277, 1988.
Inspire Record 260828 DOI 10.17182/hepdata.29918
2 data tables

TOPOLOGICAL CROSS SECTION.

95 PCT CL UPPER LIMITS.


First Observation of $\gamma \gamma \to \omega \omega$

The ARGUS collaboration Albrecht, H. ; Andam, A.A. ; Binder, U. ; et al.
Phys.Lett. B198 (1987) 577-582, 1987.
Inspire Record 247566 DOI 10.17182/hepdata.30070
3 data tables

Topological cross section. 14 pct systematic uncertainty not included.

Cross section for (omega omega) production. Additional 25 pct systematic error not included.

Cross section for (omega pi+ pi- pi0) where (omega omega) events have been removed. Additional 15 pct systematic error not included.


First Observation of $\gamma \gamma \to K^*0 \bar{K}^*$0

The ARGUS collaboration Albrecht, H. ; Andam, A.A. ; Binder, U. ; et al.
Phys.Lett. B198 (1987) 255-260, 1987.
Inspire Record 248680 DOI 10.17182/hepdata.30080
6 data tables

TOPOLOGICAL CROSS SECTION.

(K*0 K*BAR0) cross section.

(K*0 K- PI+ + CC) CROSS SECTION WITH (K*0 K*BAR0) REMOVED.

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Transverse Momentum of Hadrons Produced in Neutrino and Anti-neutrino Interactions on an Isoscalar Target in BEBC

The Aachen-Bonn-CERN-Democritos-London-Oxford-Saclay collaboration Deden, H. ; Fritze, P. ; Grassler, H. ; et al.
Nucl.Phys. B181 (1981) 375, 1981.
Inspire Record 153272 DOI 10.17182/hepdata.34301
4 data tables

No description provided.

No description provided.

No description provided.

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