3 years ago

Examining the model dependence of extracting the kinetic freeze-out temperature and transverse flow velocity in small collision system.

Roy A. Lacey, Bao-Chun Li, Hai-Ling Lao, Fu-Hu Liu, Mai-Ying Duan

The kinetic freeze-out temperatures $T_0$ and transverse flow velocities $\beta_T$ in small collision systems at high energy are extracted by four variants of the fitting function. The first two variants are the Blast-Wave model with Boltzmann-Gibbs statistics and Tsallis statistics respectively, in which non-zero transverse flow velocity of produced particles is considered. The last two variants are an alternative method which uses the Boltzmann and Tsallis distributions to extract the effective temperatures respectively. Then $T_0$ and $\beta_T$ are regarded as the intercept and slope in some linear relations. It is found that the values of $T_0$ ($\beta_T$) obtained by the four variants are similar, and in some cases the four results are in agreement with each other within errors. In particular, comparing with central nucleus-nucleus collisions, proton-proton collisions are found to be closer to peripheral nucleus-nucleus collisions in terms of $T_0$ and $\beta_T$.

Publisher URL: http://arxiv.org/abs/1708.07749

DOI: arXiv:1708.07749v3

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.