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Light (Hyper-)Nuclei production at the LHC measured with ALICE

The high center-of-mass energies delivered by the LHC during the last three years of operation led to accumulate a significant statistics of light (hyper-)nuclei in pp, p--Pb and Pb--Pb collisions. The ALICE apparatus allows for the detection of these rarely produced particles over a wide momentum r...

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Autor principal: Barile, Francesco
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1051/epjconf/20159504003
http://cds.cern.ch/record/1968318
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author Barile, Francesco
author_facet Barile, Francesco
author_sort Barile, Francesco
collection CERN
description The high center-of-mass energies delivered by the LHC during the last three years of operation led to accumulate a significant statistics of light (hyper-)nuclei in pp, p--Pb and Pb--Pb collisions. The ALICE apparatus allows for the detection of these rarely produced particles over a wide momentum range thanks to its excellent vertexing, tracking and particle identification capabilities. The last is based on the specific energy loss in the Time Projection Chamber and the velocity measurement with the Time-Of-Flight detector. The Cherenkov technique, exploited by a small acceptance detector (HMPID), has also been used for the most central Pb--Pb collisions to identify (anti-)deuterons at intermediate transverse momentum.\\ Results on the production of stable nuclei and anti-nuclei in pp, p--Pb and Pb--Pb collisions are presented. Hypernuclei production rates in Pb--Pb are also described, together with a measurement of the hypertriton lifetime. The results are compared with the predictions from thermal and coalescence models. Moreover the results on the search for weakly-decaying light exotic states, such as the $\Lambda\Lambda$ (H-dibaryon) and the $\Lambda$-neutron bound states are discussed.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-19683182022-08-10T12:57:07Zdoi:10.1051/epjconf/20159504003http://cds.cern.ch/record/1968318engBarile, FrancescoLight (Hyper-)Nuclei production at the LHC measured with ALICEParticle Physics - ExperimentThe high center-of-mass energies delivered by the LHC during the last three years of operation led to accumulate a significant statistics of light (hyper-)nuclei in pp, p--Pb and Pb--Pb collisions. The ALICE apparatus allows for the detection of these rarely produced particles over a wide momentum range thanks to its excellent vertexing, tracking and particle identification capabilities. The last is based on the specific energy loss in the Time Projection Chamber and the velocity measurement with the Time-Of-Flight detector. The Cherenkov technique, exploited by a small acceptance detector (HMPID), has also been used for the most central Pb--Pb collisions to identify (anti-)deuterons at intermediate transverse momentum.\\ Results on the production of stable nuclei and anti-nuclei in pp, p--Pb and Pb--Pb collisions are presented. Hypernuclei production rates in Pb--Pb are also described, together with a measurement of the hypertriton lifetime. The results are compared with the predictions from thermal and coalescence models. Moreover the results on the search for weakly-decaying light exotic states, such as the $\Lambda\Lambda$ (H-dibaryon) and the $\Lambda$-neutron bound states are discussed.The high center-of-mass energies delivered by the LHC during the last three years of operation led to accumulate a significant statistics of light (hyper-)nuclei in pp, p--Pb and Pb--Pb collisions. The ALICE apparatus allows for the detection of these rarely produced particles over a wide momentum range thanks to its excellent vertexing, tracking and particle identification capabilities. The last is based on the specific energy loss in the Time Projection Chamber and the velocity measurement with the Time-Of-Flight detector. The Cherenkov technique, exploited by a small acceptance detector (HMPID), has also been used for the most central Pb--Pb collisions to identify (anti-)deuterons at intermediate transverse momentum. Results on the production of stable nuclei and anti-nuclei in pp, p--Pb and Pb--Pb collisions are presented. Hypernuclei production rates in Pb--Pb are also described, together with a measurement of the hypertriton lifetime. The results are compared with the predictions from thermal and coalescence models. Moreover the results on the search for weakly-decaying light exotic states, such as the $\Lambda\Lambda$ (H-dibaryon) and the $\Lambda$-neutron bound states are discussed.The high center-of-mass energies delivered by the LHC during the last three years of operation led to accumulate a significant statistics of light (hyper-)nuclei in pp, p-Pb and Pb-Pb collisions. The ALICE apparatus allows for the detection of these rarely produced particles over a wide momentum range thanks to its excellent vertexing, tracking and particle identification capabilities. The last is based on the specific energy loss in the Time Projection Chamber and the velocity measurement with the Time-Of-Flight detector. The Cherenkov technique, exploited by a small acceptance detector (HMPID), has also been used for the most central Pb-Pb collisions to identify (anti-)deuterons at intermediate transverse momentum.arXiv:1411.1941oai:cds.cern.ch:19683182014-11-07
spellingShingle Particle Physics - Experiment
Barile, Francesco
Light (Hyper-)Nuclei production at the LHC measured with ALICE
title Light (Hyper-)Nuclei production at the LHC measured with ALICE
title_full Light (Hyper-)Nuclei production at the LHC measured with ALICE
title_fullStr Light (Hyper-)Nuclei production at the LHC measured with ALICE
title_full_unstemmed Light (Hyper-)Nuclei production at the LHC measured with ALICE
title_short Light (Hyper-)Nuclei production at the LHC measured with ALICE
title_sort light (hyper-)nuclei production at the lhc measured with alice
topic Particle Physics - Experiment
url https://dx.doi.org/10.1051/epjconf/20159504003
http://cds.cern.ch/record/1968318
work_keys_str_mv AT barilefrancesco lighthypernucleiproductionatthelhcmeasuredwithalice