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Differential measurements of elliptic flow (v2) for Au+Au and Cu+Cu collisions at sqrt[sNN]=200 GeV are used to test and validate predictions from perfect fluid hydrodynamics for scaling of v2 with eccentricity, system size, and transverse kinetic energy (KE T). For KE T identical with mT-m up to approximately 1 GeV the scaling is compatible with(More)
To develop a human model for measuring the effect of intramuscularly injected botulinum toxin, we injected both extensor digitorum brevis (EDB) muscles in 13 healthy volunteers with seven varying doses of botulinum toxin type A. We measured, pre- and postinjection, EDB M-wave amplitude, area, and mean rectified voltage (MRV) (obtained during maximal(More)
Despite the clinical potential of botulinum toxin type B (BTXB) for treating focal dystonia, hemifacial spasm, and other movement disorders, particularly in those resistant to botulinum toxin type A (BTXA), no objective human data exist to compare the muscle paralysis resulting from these two botulinum toxin subtypes. To objectively compare the human muscle(More)
A number of studies have found that ant colonies vary in many colony-level phenotypes, including the level of aggression towards non-nestmates. The extent of a colony’s aggression and defense of the nest in response to attacks by predators is likely to affect its survival and reproduction, but the degree to which colonies vary in their defensive response is(More)
Botulinum toxin type A (BTX-A) (Botox, Allergan, Irvine, CA) labeling recommends its use within 4 hours of reconstitution. Since BTX-A is available only in 100-unit vials, a substantial quantity is often discarded. Using eight volunteers, we measured the percent decline in extensor digitorum brevis (EDB) M-wave amplitude (percent paralysis) following(More)
The double helicity asymmetry in neutral pion production for pT=1 to 12 GeV/c was measured with the PHENIX experiment to access the gluon-spin contribution, DeltaG, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of micro2=4 GeV2 a next to leading order QCD analysis gives DeltaG[0.02,0.3]=0.2, with a constraint of(More)
Full jet reconstruction in relativistic heavy ion collisions provides new and unique insights to the physics of parton energy loss. Because of the large underlying event multiplicity in A+A collisions, random and correlated fluctuations in the background can result in the reconstruction of fake jets. These fake jets must be identified and rejected to obtain(More)
We use recent nuclear parton distributions, among them the Hirai – Kumano – Nagai (HKN) and Eskola – Paukkunen – Salgado (EPS08) parameterizations, in our pQCD-improved parton model to calculate the nuclear modification factor, R AA ′ (pT), at RHIC and at the LHC. At RHIC, the deuteron-gold nuclear modification factor for pions, measured at pT ≥ 10 GeV/c in(More)
  • Gergely G, Abor Barnaf¨oldi, P Eter, L Evai, George Fai, Abor Papp +1 other
  • 2007
Received (received date) Revised (revised date) In this work we compare the nuclear modification factors in proton (deuteron) – nucleus collisions at CERN SPS, FNAL and RHIC energies in a wide p T range. In these experiments the nuclear modification factor has shown an enhancement at p T ≈ 4 GeV/c. The height of this " Cronin peak " depends on the c.m.(More)