{"paper":{"title":"The Fragility of High-pT Hadron Spectra as a Hard Probe","arxiv_id":"hep-ph/0406319","primary_cat":"hep-ph","submitted_at":"2004-06-29T09:21:04+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. 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LHC.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.95,"main_claim_p":0.17,"quantitative":false,"quantitative_p":0.43,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.98,"id":"s2","own":true,"role":"interpretation","text":"This is a consequence of the shape of the partonic pT-spectrum in elementary collisions which implies that for the same value of the nuclear modification factor at higher pT, an increasingly smaller fraction of parton energy loss is needed.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.84,"main_claim_p":0.1,"quantitative":false,"quantitative_p":0.21,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.02,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.98}},{"i":3,"p":0.99,"id":"s3","own":true,"role":"result","text":"When the values of the time-averaged transport coefficient exceed 5 GeV^2/fm, the nuclear modification factor gradually loses its sensitivity to the corresponding produced energy density.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.88,"main_claim_p":0.09,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.01,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":4,"p":0.96,"id":"s4","own":true,"role":"interpretation","text":"This is due to particle production in the outer corona of the medium, which remains almost unsuppressed even for extreme densities.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.65,"main_claim_p":0.06,"quantitative":false,"quantitative_p":0.12,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.04,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.96}},{"i":5,"p":0.96,"id":"s5","own":true,"role":"interpretation","text":"Thus, even for the highest experimentally accessible transverse momentum at the LHC and in contrast to jets, the measurement of leading partons via leading hadrons is not a penetrating probe of the dense matter, but a rather fragile probe which fragments for the opacities reached below the skin of the medium.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.83,"main_claim_p":0.87,"quantitative":true,"quantitative_p":0.78,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.03,"background":0.0,"limitation":0.01,"future_work":0.0,"contribution":0.0,"interpretation":0.96}},{"i":6,"p":0.81,"id":"s6","own":true,"role":"interpretation","text":"Relating the transport coefficient to the energy density produced in the collision region, we find and discuss a phenomenon reminiscent of the opacity problem of elliptic flow: namely, the interaction of the hard parent parton with the medium appears to be much stronger than that expected for perturbative interactions of the hard parton with an ideal quark gluon 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