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The A dependence of the nuclear structure function ratios

The New Muon collaboration Arneodo, M. ; Arvidson, A. ; Badee̵k, B. ; et al.
Nucl.Phys.B 481 (1996) 3-22, 1996.
Inspire Record 429851 DOI 10.17182/hepdata.32712

Results are presented for six nuclei from Be to Pb on the structure function ratios F 2 A / F 2 C ( x ) and their A dependence in deep inelastic muon scattering at 200 GeV incident muon energy. The data cover the kinematic range 0.01 < x < 0.8 with Q 2 ranging from 2 to 70 GeV 2 . The A dependence of nuclear structure function ratios is parametrised and compared to various models.

6 data tables match query
Table 1

Additional normalisation error of 0.002 in the ratio.

Table 2

Additional normalisation error of 0.002 in the ratio.

Table 3

Additional normalisation error of 0.003 in the ratio.

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Measurement of the Interference Structure Function Xg(3) (X) in Muon - Nucleon Scattering

Argento, A. ; Benvenuti, A.C. ; Bollini, D. ; et al.
Phys.Lett.B 140 (1984) 142-144, 1984.
Inspire Record 195945 DOI 10.17182/hepdata.13025

The interference structure function xG 3 ( x ) has been measured for the first time scattering positive and negative muons of opposite helicity off a carbon target. The x dependence observed for Q 2 between 40 and 180 (GeV/c 2 ) is in good agreement with predictions of the quark-parton model. The measured ratio 2( a u Q u + a d Q d )/( Q u 2 + Q d 2 = 1.87 ± 0.25 (stat.) ± 0.24 (syst.) is consistent with the hypothesis of fractional quark charges and determines the sign of Q u − Q d to be positive.

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


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 match query
Table 1

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

Table 2

No description provided.

Table 3

No description provided.

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The Ratio of the Nucleon Structure Functions f2 (n) for Iron and Deuterium

The European Muon collaboration Aubert, J.J. ; Bassompierre, G. ; Becks, K.H. ; et al.
Phys.Lett.B 123 (1983) 275-278, 1983.
Inspire Record 188925 DOI 10.17182/hepdata.30745

Using the data on deep inelastic muon scattering on iron and deuterium the ratio of the nucleon structure functions F 2 N ( Fe )/ F 2 N ( D ) is presented. The observed x -dependence of this ratio is in disagreement with existing theoretical predictions.

1 data table match query
Table 1

RANGE OF Q*2 VARIES WITH X. E.G. AT X=0.05 , 9<Q2<27. AT X=0.65 , 36<Q2<170 GEV**2.


NEW RESULTS ON NUCLEAR EFFECTS IN DEEP INELASTIC MUON SCATTERING ON DEUTERIUM AND IRON TARGETS

The BCDMS collaboration Benvenuti, A.C. ; Bollini, D. ; Bruni, G. ; et al.
JINR-E1-86-591, 1986.
Inspire Record 238756 DOI 10.17182/hepdata.39470

None

2 data tables match query
Table 1

VALUES OBTAINED USING ASSUMPTION R=0.

Table 2

VALUES OBTAINED USING ASSUMPTION R=0.


Study of nuclear effects in the determination of nucleon structure functions with heavy targets

The Bologna-CERN-Dubna-Munich-Saclay collaboration Benvenuti, A.C. ; Bollini, D. ; Bruni, G. ; et al.
(1984) I.219, 1984.
Inspire Record 207569 DOI 10.17182/hepdata.39514

None

4 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

F2(FE)/F2(DEUT) AVERAGED OVER Q2.

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A Measurement of Nuclear Effects in Deep Inelastic Muon Scattering on Deuterium, Nitrogen and Iron Targets

The BCDMS collaboration Bari, G. ; Benvenuti, A.C. ; Bollini, D. ; et al.
Phys.Lett.B 163 (1985) 282, 1985.
Inspire Record 216817 DOI 10.17182/hepdata.30331

New data is presented on the ratios of structure functions F 2 ( x , Q 2 ) measured in deep inelastic muon scattering with deuterium, nitrogen, and iron targets. The existence of nuclear effects at large Q 2 is confirmed with improved systematic accuracy. The ratio F 2 Fe ( x ) F 2 D 2 ( x ) covers the range 0.20 ⩽ x ⩽ 0.70 and is in agreement with earlier measurements. The ratio F 2 N 2 ( x )/ F 2 D 2 ( x ) is measured over the range 0.08 ⩽ x ⩽ 0.70 and is compatible with unity below x = 0.3.

2 data tables match query
Table 1

VALUES OF Q2 CORRESPONDING TO THE X-BINS IN THIS TABLE ARE:- 46-106,46-106,53-150,53-200,70-200,80-200 RESPECTIVELY.

Table 2

VALUES OF Q2 CORRESPONDING TO THE X-BINS IN THIS TABLE ARE:- 26-40,26-61,30-80,30-106,30-106,30-150,30-200,35-200,46-200.


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 match query
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 Measurement of the ratio of the nucleon structure function in copper and deuterium

The European Muon collaboration Ashman, J. ; Badelek, B. ; Baum, G. ; et al.
Z.Phys.C 57 (1993) 211-218, 1993.
Inspire Record 341575 DOI 10.17182/hepdata.14499

Results are presented on the ratios of the nucleon structure function in copper to deuterium from two separate experiments. The data confirm that the nucleon structure function,F2, is different for bound nucleons than for the quasi-free ones in the deuteron. The redistribution in the fraction of the nucleon's momentum carried by quarks is investigated and it is found that the data are compatible with no integral loss of quark momenta due to nuclear effects.

3 data tables match query
Table 1

Results from the 'chariot' experiment.

Table 2

Results from the 'addendum' experiment.

Table 3

Merged 'chariot' and 'addendum' ratio.. Errors are combined statistics and systematics.


Nuclear structure function in carbon near x = 1

The BCDMS collaboration Benvenuti, A.C. ; Bollini, D. ; Camporesi, T. ; et al.
Z.Phys.C 63 (1994) 29-36, 1994.
Inspire Record 374300 DOI 10.17182/hepdata.48235

Data from deep inelastic scattering of 200 GeV muons on a carbon target with squared four-momentum transfer 52 GeV2≤Q2≤200 GeV2 were analysed in the region of the Bjorken variable close tox=1, which is the kinematic limit for scattering on a free nucleon. At this value ofx, the carbon structure function is found to beF2C≈1.2·10−4. Thex dependence of the structure function forx>0.8 is well described by an exponentialF2C∞exp(−sx) withs=16.5±0.6.

5 data tables match query
Table 1

No description provided.

Table 2

Multiplicative factors by which F2 has to be multiplied or divided to allow for a systematic uncertainty in detector resolution.

Table 3

Multiplicative factors by which F2 has to be multiplied or divided to allow for a systematic uncertainty in the beam energy.

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