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Published byGodfrey Francis Rose Modified over 9 years ago
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1 FORWARD-BACKWARD RAPIDITY CORRELATIONS IN A TWO STEP SCENARIO Jorge Dias de Deus José Guilherme Milhano CERN, 2007
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2 TWO STEP SCENARIO?... AS A RESULT OF COLLISIONS 1) FORMATION OF EXTENDED OBJECTS IN RAPIDITY, FIRST; 2) FOLLOWED BY LOCAL EMISSION OF PARTICLES [This happens in GLASMA model, SCHWINGER strings, …] FORWARD-BACKWARD RAPIDITY CORRELATIONS: [Two rapidity windows with a rapidity gap between] F = a + bn F b ≡ D 2 FB / D 2 FF
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3 BASIC FORMULAE NUMBER OF COLLISIONS ~ NUMBER OF STRINGS: : reduction factor, determined by multiplicity
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4 where and we have assumed Poisson distribution for local emission. MAIN RESULT: [CGC model: ]
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5 APLLICATION: y B FIXED, MID RAPIDITY y F VARYING, MOVING INTO HIGHER RAPIDITY REWRITE x ≡ / varying, 1 < x < ∞ K’ = k / fixed Ex: k’ = 1
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