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Open charm yields in d + Au collisions at s(NN)**(1/2) = 200-GeV

The STAR collaboration
Phys.Rev.Lett. 94 (2005) 062301, 2005

Abstract (data abstract)
Mid rapidity open charm spectra from measurements of D0 production in D+AU reactions and measurements of electrons/positrons production from charm semi leptonic decay in P+P and D+AUcollisions at center-of-mass energy of 200 GeV, presented by the STAR experiment The D0 spectrum covers a transverse momentum range of 0.1<PT<3 GeV/c and the electron spectra cover a range of 1<PT<4 GeV/c Data points at PT = 2.2, 2.7 and 3.5 GeV/c was obtained using only the TPC (Time Projection Chamber) and cover a pseudo-rapidity range of -1<eta<1, while other points were obtained using both a prototype Time-of-Flight System and the TPC and cover a pseudo-rapidity range of -1<eta<0 Errors presented are statistical only Data points at PT = 2.2, 2.7 and 3.5 GeV/c was obtained using only the TPC (Time Projection Chamber) and cover a pseudo-rapidity range of -1<eta<1, while other points were obtained using both a prototypeTime-of-Flight System and the TPC and cover a pseudo-rapidity range of -1<eta<0 The non photonic electron yield is obtained by subtracting estimated photonic background to the inclusive electron spectra Data points at PT = 2.2, 2.7 and 3.5 GeV/c was obtained using only the TPC (Time Projection Chamber) and cover a pseudo-rapidity range of -1<eta<1, while other points were obtained using both a prototypeTime-of-Flight System and the TPC and cover a pseudo-rapidity range of -1<eta<0 The non photonic electron yield is obtained by subtracting estimated photonic background to the inclusive electron spectra A ratio N(D0)/N(cc_bar)= 0.54 +- 0.05 and a p+p inelastic scattering crosssection of 42 mb have been used to calculate the differential cross section. A ratio N(D0)/N(cc_bar)= 0.54 +- 0.05, and a p+p inelastic scattering crosssection of 42 mb have been used to calculate the differential cross section. A factor f = 4.7 +- 0.7 have been used to convert the Dsig/Dy at mid-rapidity to the total cross section.

  • Table 1

    Data from F2 P4

    10.17182/hepdata.43117.v1/t1

    Inclusive electrons yield versus transverse momentum in D+AU collisions Data points at PT = 2.2, 2.7 and 3.5 GeV/c was...

  • Table 2

    Data from F2 P4

    10.17182/hepdata.43117.v1/t2

    Inclusive electrons yield versus transverse momentum in P+P collisions.

  • Table 3

    Data from F3 P5

    10.17182/hepdata.43117.v1/t3

    D0 yield versus transverse momentum in D+AU collisions.

  • Table 4

    Data from F3 P5

    10.17182/hepdata.43117.v1/t4

    Non photonic electrons yield versus transverse momentum in D+AU collisions.

  • Table 5

    Data from F3 P5

    10.17182/hepdata.43117.v1/t5

    Non photonic electrons yield versus transverse momentum in P+P collisions.

  • Table 6

    Data from T1 P5

    10.17182/hepdata.43117.v1/t6

    D0 differential yield at mid rapidity and corresponding calculated differential charm cross section at midrapidity.

  • Table 7

    Data from T1 P5

    10.17182/hepdata.43117.v1/t7

    Sum of the non photonic electrons/positrons and D0 differential yield at mid rapidity and corresponding calculated differential charm cross section...

  • Table 8

    Data from F4 P5

    10.17182/hepdata.43117.v1/t8

    Total charm cross section per nucleon nucleon collision IN D+AU collisions.

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