Yamagishi, Y.
Structure Function
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Precision measurement of structure function ratios for Li-6, C-12 and Ca-40

The New Muon collaboration Amaudruz, P. ; Arneodo, M. ; Arvidson, A. ; et al.
Z.Phys.C 53 (1992) 73-78, 1992.
Inspire Record 319669 DOI 10.17182/hepdata.14706

The structure function ratiosF2C/F2Li,F2Ca/F2Li andF2Ca/F2C were measured in deep inelastic muonnucleus scattering at an incident muon energy of 90 GeV, covering the kinematic range 0.0085

3 data tables
Table 1

Overall normalization error of 0.7%, due to uncertainties in target thickness, not included in the table.

Table 2

Overall normalization error of 0.8%, due to uncertainties in target thickness, not included in the table.

Table 3

Overall normalization error of 0.5%, due to uncertainties in target thickness, not included in the table.


Precision measurement of the structure function ratios F2 (He) / F2 (D), F2 (C) / F2 (D) and F2 (Ca) / F2 (D)

The New Muon collaboration Amaudruz, P. ; Arneodo, M. ; Arvidson, A. ; et al.
Z.Phys.C 51 (1991) 387-394, 1991.
Inspire Record 314878 DOI 10.17182/hepdata.14935

We present the structure function ratiosF2He/F2D,F2C/F2D andF2Ca/F2D measured in deep inelastic muon-nucleus scattering at an incident muon momentum of 200 GeV. The kinematic range 0.0035

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


The Gottfried sum from the ratio F2(n) / F2(p)

The New Muon collaboration Amaudruz, P. ; Arneodo, M. ; Arvidson, A. ; et al.
Phys.Rev.Lett. 66 (1991) 2712-2715, 1991.
Inspire Record 313931 DOI 10.17182/hepdata.19908

Experimental results obtained at the CERN Super Proton Synchrotron on the structure-function ratio F2n/F2p in the kinematic range 0.004

1 data table
Table 1

No description provided.


A Measurement of the photon structure function F2

The AMY collaboration Sasaki, T. ; Yamagishi, Y. ; Tanaka, R. ; et al.
Phys.Lett.B 252 (1990) 491-498, 1990.
Inspire Record 299056 DOI 10.17182/hepdata.29524

The photon structure function F 2 has been measured at average Q 2 values of 73,160 and 390 ( GeV c ) 2 . We compare the x dependence of the Q 2 = 73 ( GeV c ) 2 data with theoretical expectations based on QCD. In addition we present results on the Q 2 evolution of the structure function for the intermediate x range (0.3⩽ x ⩽0.8). The results are consistent with QCD.

4 data tables
Table 1

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

Table 2

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

Table 3

Photon structure function F2 for total data.

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Measurement of the neutron and the proton F2 structure function ratio

The New Muon (NMC) collaboration Allasia, D. ; Amaudruz, P. ; Arneodo, M. ; et al.
Phys.Lett.B 249 (1990) 366-372, 1990.
Inspire Record 298077 DOI 10.17182/hepdata.29644

The ratio of the structure function F 2 n / F 2 p ( x ) has been measured in deep inelastic scattering of 274 GeV muons on hydrogen and deuterium targets exposed simultaneously to the beam. The results were obtained from 0.3 (0.6) million events from hydrogen (deuterium) in the range 0.004 < x < 0.8 and 1 < Q 2 < 190 GeV 2 . At x < 0.25 both the statistical and the systematic error is below 2%. Implications for parton distributions and for the σ w / σ z production cross section ratio in p p collisions are discussed. When compared to other results obtained at lower energies, the data indicate a Q 2 dependence of the ratio.

1 data table
Table 1

No description provided.


A High Statistics Measurement of the Deuteron Structure Functions F2 (X, $Q^2$) and R From Deep Inelastic Muon Scattering at High $Q^2$

The BCDMS collaboration Benvenuti, A.C. ; Bollini, D. ; Bruni, G. ; et al.
Phys.Lett.B 237 (1990) 592-598, 1990.
Inspire Record 285497 DOI 10.17182/hepdata.6191

We present results on a high statistics study of the nucleon structure functions F 2 ( x , Q 2 ) and R = σ L / σ T measured in deep inelastic scattering of muons on a deuterium target. The analysis is based on 8×10 5 events after all cuts, recorded at beam energies of 120, 200 and 280 GeV in the kinematic range 0.06⩽ × ⩽0.80 and 8GeV 2 ⩽ Q 2 ⩽260GeV 2 . Scaling violations observed in the data are in agreement with predictions of perturbative QCD and allow to determine the QCD mass scale parameter Λ.

87 data tables
Table 1

No description provided.

Table 2

R=SIG(L)/SIG(T) is taken to be zero.

Table 3

R=SIG(L)/SIG(T) is taken to be zero.

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A High Statistics Measurement of the Proton Structure Functions F(2) (x, Q**2) and R from Deep Inelastic Muon Scattering at High Q**2

The BCDMS collaboration Benvenuti, A.C. ; Bollini, D. ; Bruni, G. ; et al.
Phys.Lett.B 223 (1989) 485-489, 1989.
Inspire Record 276661 DOI 10.17182/hepdata.12557

We present results on a high statistics study of the proton structure functions F 2 ( x , Q 2 ) and R = σ L / σ T measured in deep inelastic scattering of muons on a hydrogen target. The analysis is based on 1.8 × 10 6 events after all cuts, recorded at beam energies of 100, 120, 200 and 280 GeV and covering a kinematic range 0.06 ⩽ x ⩽ 0.80 and 7 GeV 2 ⩽ Q 2 ⩽260 GeV 2 . At small x , we find R to be different from zero in agreement with predictions of perturbative QCD.

105 data tables
Table 1

THE AVERAGE VALUES OF Q**2 AT EACH OF THE X VALUES LISTED IN THIS TABLE ARE 15,20,20,25,30,35,40,45,50,50.

Table 2

R=SIG(L)/SIG(T) IS TAKEN TO BE ZERO.

Table 3

R=SIG(L)/SIG(T) IS TAKEN TO BE ZERO.

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Measurement of the Ratios of Deep Inelastic Muon - Nucleus Cross-Sections on Various Nuclei Compared to Deuterium

The European Muon collaboration Ashman, J. ; Badelek, B. ; Baum, Guenter ; et al.
Phys.Lett.B 202 (1988) 603-610, 1988.
Inspire Record 260668 DOI 10.17182/hepdata.29991

Results are presented on the ratios of the deep inelastic muon-nucleus cross sections for carbon, copper and tin nuclei to those measured on deuterium. The data confirm that the structure functions of the nucleon measured in nuclei are different from those measured on quasi-free nucleons in deuterium. The kinematic range of the data is such that 〈 Q 2 〉 ∼ 5 GeV 2 at x ∼ 0.03, increasing to 〈 Q 2 〉 ∼ 35 GeV 2 for x ∼ 0.65. The measured cross section ratios are less than unity for x ≲ 0.05 and for 0.25 ≲ x < 0.7. The decrease of the ratio below unity for low x becomes larger as A increases as might be expected from nuclear shadowing. However, this occurs at relatively large values of Q 2 (∼ 5 GeV 2 ) indicating that such shadowing is of patrionic origin.

3 data tables
Table 1

Q**2= 5.1,7.8,11.4,14.4,17.3,20.2,24.1,29.8,33.6 GEV**2.

Table 2

Q**2= 4.4,8.4,13.5,17.9,21.1,24.4,29.5,34.0,40.4 GEV**2.

Table 3

Q**2= 4.0,7.7,11.1,14.6,17.1,19.8,24.8,32.4 GEV**2.


A High Statistics Measurement of the Nucleon Structure Function F(2) (X,$Q^2$) From Deep Inelastic Muon - Carbon Scattering at High $Q^2$

The BCDMS collaboration Benvenuti, A.C. ; Bollini, D. ; Bruni, G. ; et al.
Phys.Lett.B 195 (1987) 91-96, 1987.
Inspire Record 247013 DOI 10.17182/hepdata.30107

We present results from a high statistics study of the nucleon structure function F 2 ( x , Q 2 ) measured in deep inelastic scattering of muons on carbon in the kinematic range 0.25⩽ x ⩽0.80 and Q 2 ⩾25 GeV 2 . The analysis is based on 1.5×10 6 reconstructed events recorded at beam energies of 120, 200 and 280 GeV. R = σ L / σ T is found to be independent of x in the range 0.25⩽ x ⩽0.07 and 40 GeV 2 ⩽ Q 2 ⩽200 GeV 2 with a mean value R =0.015±0.013 ( stat ) ±0.026 (syst.).

19 data tables
Table 1

R=SIG(L)/SIG(T).

Table 2

No description provided.

Table 3

No description provided.

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Measurements of the Nucleon Structure Functions F(2)N in Deep Inelastic Muon Scattering from Deuterium and Comparison with Those from Hydrogen and Iron

The European Muon collaboration Aubert, J.J. ; Bassompierre, G. ; Becks, K.H. ; et al.
Nucl.Phys.B 293 (1987) 740-786, 1987.
Inspire Record 245537 DOI 10.17182/hepdata.33529

None

12 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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