${}_{\Lambda }^3\mathrm{H}$ and ${}_{\bar{\Lambda }}^3\overline{\mathrm{H}}$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV

Abstract

The production of the hypertriton nuclei ${}_{\Lambda }^3\mathrm{H}$ and ${}_{\bar{\Lambda }}^3\overline{\mathrm{H}}$ has been measured for the first time in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV with the ALICE experiment at LHC energies. The total yield, d$N$/d$y$ $\times {B.R.}_{\left({}_{\Lambda }^3\mathrm{H}{\to }^3\mathrm{He},{\pi }^{-}\right)}=\left(3.86\pm 0.77(stat.)\pm 0.68(syst.)\right)\times 10^{-5}$ in the 0-10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter $B_3$ shows a dependence on the transverse momentum, similar to the $B_2$ of deuterons and the $B_3$ of ${}^3\mathrm{He}$ nuclei. The ratio of yields $S_3$ = ${}_{\Lambda }^3\mathrm{H}$/(${}^3\mathrm{He}$ $\times \Lambda /\mathrm{p}$) was measured to be $S_3$ = 0.60 $\pm$ 0.13 (stat.) $\pm$ 0.21 (syst.) in 0-10% centrality events; this value is compared to different theoretical models. The measured $S_3$ is fully compatible with thermal model predictions. The measured ${}_{\Lambda }^3\mathrm{H}$ lifetime, $\tau =181_{-39}^{+54}(stat.)\pm 33(syst.)\mathrm{ps}$ is compatible within 1$\sigma$ with the world average value.

21 pages, 7 captioned figures, 4 tables, authors from page 16, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/1700

References in corpus (8)

• Big-Bang Nucleosynthesis
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• K*(892)${}^0$ and $\Phi$(1020) production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. Coalescence
• Hadron yields and the phase diagram of strongly interacting matter
• Strangeness fluctuations and MEMO production at FAIR
• From hypernuclei to the Inner Core of Neutron Stars: A Quantum Monte Carlo Study
• Neutron star interiors and the equation of state of ultra-dense matter

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