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Now showing items 81 - 96 of 45782

  • Measurement of low- p T D + -meson production cross-section at CDF II

    Marchese   L.  

    In this paper I report on a measurement of the low-pTD+-meson production cross-section in proton-antiproton collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the CDF experiment at the Tevatron collider during Run II. The measurement is performed in a yet unexplored low transverse momentum range, down to 1.5 GeV/c. The actual QCD theory cannot predict the behavior of the strong interactions in the low transferred-four-momentum region because in these kinematic conditions the strong coupling constant is of the order of the unity. Thus, a perturbative expansion is not useful. At present, several phenomenological models have been proposed, but they are able to describe only a few aspects of the observed physical quantities and not the full complexity. Experimental results in these conditions are then crucial to test new QCD models. The measurement of the differential cross section at low pT plays an important role in this context allowing refinement of current knowledge. While these results lie within the band of theoretical uncertainty, differences in shape suggest that theoretical predictions can benefit from further refinement taking account of them.
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  • The International Encyclopedia of Anthropology || Mukerji, D. P. (1894-1961)

    Callan, Hilary  

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  • G422(P) Vitamin D supplement use in a local population

    Payne, E.   Schmidt, M.  

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  • G422(P) Vitamin D supplement use in a local population

    Payne, E.; Schmidt, M.  

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  • EASY-II Renaissance: n, p, d, α, γ-induced Inventory Code System

    Sublet, J.-Ch.   Eastwood, J.W.   Morgan, J.G.  

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  • Reply to the Comment by D. P. Joubert

    Bobrov, V. B.   Trigger, S. A.   van Heijst, G. J. F.  

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  • D??terminants du neuropaludisme en milieu p??diatrique congolais

    Ossou-Nguiet, P.M.   Okoko, A.R.   Ekouya Bowassa, G.   Oko, A.P.   Mabiala-Babela, J.R.   Ndjobo Mamadoud, I.C.   Moyen, G.  

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  • Collectivity and thermalization in p plus p,p plus A,d+Au and He-3+Au collisions

    Huang, Shengli  

    In this proceeding, the recent measurements of the anisotropy(v(2), v(3)) in small collision systems such as p+p, p+A, d+Au and He-3+ Au collisions at the LHC and RHIC energies are presented. In p+p collisions, the v2 are measured by two and multi-particle Delta phi correlations at root S-NN =3D 2.76, 5, 7, and 13 TeV. In 200 GeV p+Au, d+Au and He-3+ Au collisions. the v(2) are measured with event plane methods. I also present the measurements of v(2) for K(S)(0)and A/(A) over bar in high multiplicity p+p collisions, in which a particle mass ordering is observed. The v(2) of identified pi(+/-), K-+/- and( anti) protons in central He-3+ Au collisions are also measured and quarknumber scaling is observed. These observations are similar to those seen in A+A collisions, and support the interpretation of a collective origin.
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  • Cross section systematics of (d,p) reactions at 8.5 MeV

    Yigit, M.   Tel, E.  

    The empirical and semi-empirical systematics of the (d,p) nuclear reaction cross sections were obtained at the incident deuteron energies of 8.5 MeV. The experimental values for (d,p) reaction cross sections were collected from the literature and analyzed for the some target nuclei 27
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  • Reply to the Comment by D. P. Joubert

    Bobrov, V. B.   Trigger, S. A.  

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  • Reply to the Comment by D. P. Joubert

    Bobrov, V. B.   Trigger, S. A.   van Heijst, G. J. F.  

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  • Spaces BMO(p(.))(D) of a variable exponent p(z)

    Karapetyants, Alexey   Samko, Stefan  

    We introduce and describe the spaces BMO(p(.))(D), I <= p(z) < infinity, of functions of bounded mean oscillation over the unit disc in the complex plane in the hyperbolic Bergman metric with respect to the Lebesgue measure and the variable exponent p = p(z).
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  • Congruences and d-filters of principal p-algebras

    Abd El-Mohsen Badawy  

    Abstract The concept of d -filters is introduced in p -algebras. Some properties of d -filters are studied. It is proved that the class F d ( L ) of all d -filters of a p -algebra L is a bounded complete lattice. A characterization of d -filters of a principal p -algebra is given. Also many properties of congruences induced by the d -filters are derived. A relationship between the d -filters of a principal p -algebra L and the congruences in [ Φ , ∇] is established.
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  • Spectroscopy ofη′ Mesic Nuclei with (p,d) Reaction

    Yoshiki K. Tanaka   Stefan Friedrich   Hiroyuki Fujioka   Hans Geissel…  

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  • production in p+p, d+Au, Au+Au collisions at in STAR

    Rosi Reeda   the STAR Collaborationa  

    Quarkonium is a good probe of the dense matter produced in heavy-ion collisions at RHIC because it is produced early in the collision and the production is theorized to be suppressed due to the Debye color screening of the potential between the heavy quarks. A model dependent measurement of the temperature of the Quark Gluon Plasma (QGP) can be made by examining the ratio of the production of various quarkonium states in heavy ion collisions versus p+p collisions as lattice calculations indicate that the quarkonium states will be sequentially suppressed. Suppression is quantified by calculating RAA, which is the ratio of the yield in Au+Au to the production in p+p scaled by the number of binary collisions. The states are of particular interest because at 200 GeV the effects of feed down and co-movers are smaller than for J/ψ which decreases the systematic uncertainty of the RAA determination. In addition to hadronic absorption, additional cold nuclear matter effects, such as shadowing of the PDFs, can be determined from d+Au collisions. We will present our results for mid-rapidity production in p+p, as well as our preliminary results in d+Au and Au+Au at . These results will then be compared with theoretical QCD calculations.
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  • Provider: Xiaorong He, M. D., P. C., Audit #: 13-2367

    JAMES C. COX   ANDREW M. CUOMO  

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