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Considering the Haystack: the pp Inelastic Cross ... - Physics Division

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Diffractive Dissociation<br />

Double Dissociation<br />

}<br />

}<br />

X<br />

Y<br />

Single Dissociation<br />

• Color singlet exchange leads to<br />

rapidity gaps<br />

• Mass of dissociation product<br />

describes systems:<br />

= M 2 X /s<br />

• ξ relates to (pseudo)rapidity gap<br />

start, <strong>the</strong>refore detector acceptance:<br />

⌘min / log<br />

M 2<br />

X<br />

s<br />

LBL RPM<br />

05/22/2012<br />

} X<br />

Rapidity<br />

gap start<br />

14

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