Abstract
Temperature is considerably an important and commonly used parameter to study characteristics of matter formed during high-energy nuclear collisions. Experimental data from JINR and UrQMD (latest code 3.3p2) models’ simulations have been used to estimate the temperature and other properties of negative pions in collisions of deuteron with carbon nuclei at an incident momentum of 4.2 GeV/c. Transverse mass and transverse momentum spectra have been used to get the temperature of said particles, with the help of some fittings. These fittings are referred to as Hagedorn Thermodynamic and Boltzmann Distribution functions. Such functions or equations are used to describe the particles spectra. Temperature of negative pions has been found to be equal to 98 ± 2 and 114 ± 2 MeV in experimental and model, respectively, using Hagedorn function. Results from both experimental and model calculations have also been compared with each other and thus most reliable fitting function has been suggested. It is found that Hagedorn Thermodynamic function is the most reliable function to get pions’ temperature in said collision system at given incident momentum. Similarly temperature obtained in this research has been compared with results from other experiments in the world and worthy conclusions have been reached and reported.
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Acknowledgements
We are grateful to the functionaries at Laboratory of High Energies, JINR, Dubna, Russia, for their contribution in processing of stereo-photographs from 2-metre propane bubble chamber. We also thank the developers the UrQMD Model. Imran Khan is thankful to UST Bannu for providing basic facilities and financial support from Higher Education Commission (HEC) Pakistan under TTS scheme, for the successful work.
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Khan, I., Iqbal, M., Zaman, A. et al. Characteristics of negative pions produced in dC collisions at 4.2 GeV/c per nucleon. Indian J Phys 96, 1259–1268 (2022). https://doi.org/10.1007/s12648-021-02066-5
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DOI: https://doi.org/10.1007/s12648-021-02066-5