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Production of Δ0(1232)-resonances in p + 12C collisions at a momentum of 4.2 GeV/c

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Abstract

The production of Δ 0(1232)-resonances in p + 12C collisions at 4.2 GeV/c was investigated with 4π acceptance. The masses and widths of the resonances were obtained from ananalysis of foreground and background invariant-mass distributions of pπ − pairs obtained using an angular criterion. The fraction of charged π −-mesons coming from the Δ 0(1232) decay was estimated and compared to those obtained in earlier analyses. The momentum, transverse momentum, kinetic energy, rapidity, and emission angle distributions as well as the invariant cross-sections of Δ 0(1232)-resonances werere constructed in the laboratory frame. The freeze-out temperature of theΔ 0(1232)-resonances produced in p + 12C collisions was estimated and compared to the freeze-out temperatures obtained using different methods for Δ(1232)-resonances produced in other experiments with different sets of colliding nuclei at various incident energies.

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Authors and Affiliations

  1. Department of Physics, COMSATS Institute of Information Technology, Park Road, Islamabad, Pakistan

    Kh. K. Olimov & Mahnaz Q. Haseeb

  2. Physical-Technical Institute of SPA “Physics-Sun” of Uzbek Academy of Sciences, Bodomzor Yo’li str. 2b, 100084, Tashkent, Uzbekistan

    Kh. K. Olimov

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  1. Kh. K. Olimov
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  2. Mahnaz Q. Haseeb
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Correspondence to Kh. K. Olimov.

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Communicated by P. Braun-Munzinger

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Olimov, K.K., Haseeb, M.Q. Production of Δ0(1232)-resonances in p + 12C collisions at a momentum of 4.2 GeV/c. Eur. Phys. J. A 47, 79 (2011). https://doi.org/10.1140/epja/i2011-11079-2

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