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Shadowing in Inelastic Scattering of Muons on Carbon, Calcium and Lead at Low XBj

The E665 collaboration Adams, M.R. ; Aïd, S. ; Anthony, P.L. ; et al.
Z.Phys.C 67 (1995) 403-410, 1995.
Inspire Record 394981 DOI 10.17182/hepdata.41664

Nuclear shadowing is observed in the per-nucleon cross-sections of positive muons on carbon, calcium and lead as compared to deuterium. The data were taken by Fermilab experiment E665 using inelastically scattered muons of mean incident momentum 470 GeV/c. Cross-section ratios are presented in the kinematic region 0.0001 < XBj <0.56 and 0.1 < Q**2 < 80 GeVc. The data are consistent with no significant nu or Q**2 dependence at fixed XBj. As XBj decreases, the size of the shadowing effect, as well as its A dependence, are found to approach the corresponding measurements in photoproduction.

4 data tables
Table 1

Per-nucleon cross section ratio for carbon to deuterium.

Table 2

Per-nucleon cross section ratio for calcium to deuterium.

Table 3

Per-nucleon cross section ratio for lead to deuterium.

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Measurement of the ratio sigma(n) / sigma(p) in inelastic muon - nucleon scattering at very low x and Q**2

The E665 collaboration Adams, M.R. ; Aïd, S. ; Anthony, P.L. ; et al.
Phys.Lett.B 309 (1993) 477-482, 1993.
Inspire Record 354238 DOI 10.17182/hepdata.28907

We present results on the cross-section ratio for inelastic muon scattering on neutrons and protons as a function of Bjorken chi;. The data extend to χ values two orders of magnitude smaller than in previous measurements, down to 2×10 −5 , for Q 2 >0.01 GeV 2 . The ratio is consistent with unity throughout this new range.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Saturation of shadowing at very low x(Bj)

The E665 collaboration Adams, M.R. ; Aid, S. ; Anthony, P.L. ; et al.
Phys.Rev.Lett. 68 (1992) 3266-3269, 1992.
Inspire Record 333894 DOI 10.17182/hepdata.19864

The ratio of cross sections for inelastic muon scattering on xenon and deuterium nuclei was measured at very low Bjorken x (0.000 02<xBj<0.25). The data were taken at Fermilab experiment E-665 with a 490 GeV/c muon beam incident on liquid deuterium and gaseous xenon targets. Two largely independent analysis techniques gave statistically consistent results. The xenon-to-deterium per-nucleon cross-section ratio is constant at approximately 0.7 for xBj below 0.003.

2 data tables
Table 1

Data using Electromagnetic Cuts.

Table 2

Data using Hadron Requirement.


Shadowing in the muon-xenon inelastic scattering cross-section at 490-GeV

The Fermilab E665 collaboration Adams, M.R. ; Aid, S. ; Anthony, P.L. ; et al.
Phys.Lett.B 287 (1992) 375-380, 1992.
Inspire Record 341389 DOI 10.17182/hepdata.29153

Inelastic scattering of 490 GeV μ + from deuterium and xenon nuclei has been studied for x Bj > s .001. The ratio of the xenon/deuterium cross section per nucleon is observed to vary with x Bj , with a depletion in the kinematic range 0.001 < x Bj < 0.025 which exhibits no significant Q 2 dependence. An electromagnetic calorimeter was used to verify the radiative corrections.

2 data tables
Table 1

Xenon structure function parameterized as being equal to the DEUT structurefunction.

Table 2

Xenon structure function parameterized by an x-dependent shadowing factor times the DEUT structure function.