Transverse-energy distributions at midrapidity in p+p, d+Au, and Au+Au collisions at √sNN = 62.4–200 GeV and implications for particle-production models (2013)
- Authors:
- USP affiliated authors: DIETZSCH, OLACIO - IF ; LEITE, MARCO AURELIO LISBOA - IF ; TAKAGUI, EMI MARCIA - IF
- Unidade: IF
- Assunto: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS
- Language: Inglês
- Abstract: Measurements of the midrapidity transverse energy distribution, dET /dη, are presented for p+p, d+Au, and Au+Au collisions at √sNN = 200 GeV and additionally for Au+Au collisions at √sNN = 62.4 and 130 GeV. The dET /dη distributions are first compared with the number of nucleon participants Npart, number of binary collisions Ncoll, and number of constituent-quark participants Nqp calculated from a Glauber model based on the nuclear geometry. For Au+Au, hdET /dηi/Npart increases with Npart, while hdET /dηi/Nqp is approximately constant for all three energies. This indicates that the two component ansatz, dET /dη ∝ (1 − x)Npart/2 + xNcoll, which has been used to represent ET distributions, is simply a proxy for Nqp, and that the Ncoll term does not represent a hard-scattering component in ET distributions. The dET /dη distributions of Au+Au and d+Au are then calculated from the measured p+p ET distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not.
- Imprenta:
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ABNT
ADLER, S S et al. Transverse-energy distributions at midrapidity in p+p, d+Au, and Au+Au collisions at √sNN = 62.4–200 GeV and implications for particle-production models. . São Paulo: Instituto de Física, Universidade de São Paulo. Disponível em: http://lanl.arxiv.org/pdf/1312.6676v1.pdf. Acesso em: 26 dez. 2025. , 2013 -
APA
Adler, S. S., Dietzsch, O., Leite, M. A. L., Silva, C. L. da, & Takagui, E. M. (2013). Transverse-energy distributions at midrapidity in p+p, d+Au, and Au+Au collisions at √sNN = 62.4–200 GeV and implications for particle-production models. São Paulo: Instituto de Física, Universidade de São Paulo. Recuperado de http://lanl.arxiv.org/pdf/1312.6676v1.pdf -
NLM
Adler SS, Dietzsch O, Leite MAL, Silva CL da, Takagui EM. Transverse-energy distributions at midrapidity in p+p, d+Au, and Au+Au collisions at √sNN = 62.4–200 GeV and implications for particle-production models [Internet]. 2013 ;[citado 2025 dez. 26 ] Available from: http://lanl.arxiv.org/pdf/1312.6676v1.pdf -
Vancouver
Adler SS, Dietzsch O, Leite MAL, Silva CL da, Takagui EM. Transverse-energy distributions at midrapidity in p+p, d+Au, and Au+Au collisions at √sNN = 62.4–200 GeV and implications for particle-production models [Internet]. 2013 ;[citado 2025 dez. 26 ] Available from: http://lanl.arxiv.org/pdf/1312.6676v1.pdf - Quadrupole anisotropy in dihadron azimuthal correlations in central d+Au collisions at √sNN =200 GeV
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- Centrality dependence of charged hadron production in deuteron+gold and nucleon+gold collisions ''S IND.NN' POT. 1/2' = 200 GeV
- The gluon spin contribution to the proton spin from the double helicity asymmetry inclusive ``pi´ POT.0´ production in polarized p + p collisions at ''S IND.NN' POT. 1/2' = 200 GeV
- Inclusive cross section and double helicity asymmetry for ``pi´ POT.0´ production in p+p collisions at `S POT.1/2´ = 200 GeV: implications for the polarized gluon distribution in the proton
- Dihadron azimuthal correlations in Au+Au collisions at ''S IND.NN' POT. 1/2' = 200 GeV
- Cross sections and double-helicity asymmetries of midrapidity inclusive charged hadrons in 'rô'+'rô' collisions at 'S POT. 1/2' = 62.4 GeV
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