DOE OSTI · 3011982
Accessing the deuteron source with pion-deuteron femtoscopy in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
Abstract
Femtoscopy of nonidentical particle pairs has been instrumental for precision measurements of both two-particle sources and the final-state interactions in high-energy elementary and heavy-ion collisions. The majority of measurements assessing the source properties are based on identical particle pairs, providing direct access to the characteristics of the single-particle source. The work in this paper demonstrates, via femtoscopy measurements of charged pion-deuteron pairs in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV, the feasibility of accessing the characteristics of the single-particle femtoscopic source by using particle pairs with large mass differences such as pions and deuterons. The first experimental results of the measurement of deuteron source sizes in ultrarelativistic heavy-ion collisions are presented. The results show good agreement with the trend derived from other charged hadrons such as pions, kaons, and protons as a function of transverse mass, indicating similar source properties.
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Acharya, S. [INFN, Sezione di Bari] (ORCID:0000000292135329), Agarwal, A. [Variable Energy Cyclotron Centre, Homi Bhabha National Institute], Aglieri Rinella, G. [European Organization for Nuclear Research (CERN), Geneva, Switzerland] (ORCID:0000000296113696), Aglietta, L. [Dipartimento di Fisica dell'Università] (ORCID:0009000307636802), Agnello, M. [Dipartimento DISAT del Politecnico and Sezione INFN] (ORCID:0000000207605075), Agrawal, N. [Dipartimento di Fisica e Astronomia dell'Università] (ORCID:0000000303489836), Ahammed, Z. [Variable Energy Cyclotron Centre, Homi Bhabha National Institute] (ORCID:0000000152417412), Ahmad, S. [Department of Physics, Aligarh Muslim University] (ORCID:0000000304975705), Ahn, S. U. [Korea Institute of Science and Technology Information] (ORCID:000000018847489X), Ahuja, I. [Faculty of Science, P.J. Šafárik University] (ORCID:0000000244171392), Akindinov, A. 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[Department of Physics, University of Oslo] (ORCID:0000000323169565), Arslandok, M. [Yale University] (ORCID:0000000238888303), Augustinus, A. [European Organization for Nuclear Research (CERN), Geneva, Switzerland] (ORCID:0009000854606805), Averbeck, R. [Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH] (ORCID:0000000342774963), Averyanov, D. [Affiliated with an institute formerly covered by a cooperation agreement with CERN] (ORCID:0000000200274648), Azmi, M. D. [Department of Physics, Aligarh Muslim University] (ORCID:0000000225016856), Baba, H. [University of Tokyo], Badalà, A. [INFN, Sezione di Catania] (ORCID:0000000205694828), Bae, J. [Sungkyunkwan University] (ORCID:0009000848068019), Bae, Y. [Sungkyunkwan University] (ORCID:0009000580796882), Baek, Y. W. [Gangneung-Wonju National University] (ORCID:0000000243434883), Bai, X. [University of Science and Technology of China] (ORCID:000900099085079X), Bailhache, R. 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[Affiliated with an institute formerly covered by a cooperation agreement with CERN] (ORCID:0000000248623384), Beltran, L. G. E. [Universidad Autónoma de Sinaloa] (ORCID:0000000294136069), Beltran, Y. A. V. [High Energy Physics Group, Universidad Autónoma de Puebla] (ORCID:0009000282124789), Bencedi, G. [HUN-REN Wigner Research Centre for Physics] (ORCID:0000000290405292), Bensaoula, A. [University of Houston], Beole, S. [Dipartimento di Fisica dell'Università] (ORCID:0000000346738038), Berdnikov, Y. [Affiliated with an institute formerly covered by a cooperation agreement with CERN] (ORCID:0000000303095917), Berdnikova, A. [Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg] (ORCID:0000000337057898), Bergmann, L. [Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg] (ORCID:0009000455112496), Bernardinis, L. [Dipartimento di Fisica dell'Università], Betev, L. [European Organization for Nuclear Research (CERN), Geneva, Switzerland] (ORCID:0000000213731844), Bhaduri, P. P. [Variable Energy Cyclotron Centre, Homi Bhabha National Institute] (ORCID:0000000178833190), Bhasin, A. [Physics Department, University of Jammu] (ORCID:0000000236878179), Bhattacharjee, B. [Gauhati University, Department of Physics] (ORCID:0000000237550992). 2025-12-12. Accessing the deuteron source with pion-deuteron femtoscopy in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. https://doi.org/10.1103/mrp4-z4hh
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