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in p+pbar collisions at sqrt{s}

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• Rough comparison with HERA e-p d<strong>at</strong>a, if coherent <strong>in</strong>coherent<br />

r<strong>at</strong>io is 50% - 50%<br />

• HERA (H1 & ZEUS) <strong>in</strong>put<br />

• Result:<br />

Comparison with HERA d<strong>at</strong>a<br />

• αcoh = 1.01 ± 0.07<br />

• α<strong>in</strong>coh = 0.92 ± 0.08<br />

[ZEUS, Eur.Phys.J. C24 (2002) 345]<br />

[H1, Eur.Phys.J. C46 (2006) 585]<br />

⇒ α ~ 1, good agreement with HERA d<strong>at</strong>a hard probes scal<strong>in</strong>g<br />

ISSP-Erice Mickey Chiu 14 / 16

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