@article{3196524,
    title = "Lambda K femtoscopy in Pb-Pb collisions at root s(NN)=2.76 TeV",
    author = "Acharya, S. and Adamova, D. and Adler, A. and Adolfsson, J. and and Aggarwal, M. M. and Rinella, G. Aglieri and Agnello, M. and Agrawal, N. and and Ahammed, Z. and Ahmad, S. and Ahn, S. U. and Akbar, Z. and and Akindinov, A. and Al-Turany, M. and Alam, S. N. and Albuquerque, D. S. and D. and Aleksandrov, D. and Alessandro, B. and Alfanda, H. M. and Molina, and R. Alfaro and Ali, B. and Ali, Y. and Alici, A. and Alkin, A. and Alme, and J. and Alt, T. and Altenkamper, L. and Altsybeev, I and Anaam, M. N. and and Andrei, C. and Andreou, D. and Andronic, A. and Angeletti, M. and and Anguelov, V and Anson, C. and Antinori, F. and Antonioli, P. and and Apadula, N. and Aphecetche, L. and Appelshauser, H. and Arcelli, S. and and Arnaldi, R. and Arratia, M. and Arsene, I. C. and Arslandok, M. and and Augustinus, A. and Averbeck, R. and Aziz, S. and Azmi, M. D. and Badala, and A. and Baek, Y. W. and Bagnasco, S. and Bai, X. and Bailhache, R. and and Bala, R. and Balbino, A. and Baldisseri, A. and Ball, M. and Balouza, S. and and Banerjee, D. and Barbera, R. and Barioglio, L. and Barnafoldi, G. G. and and Barnby, L. S. and Barret, V and Bartalini, P. and Bartels, C. and and Barth, K. and Bartsch, E. and Baruffaldi, F. and Bastid, N. and Basu, S. and and Batigne, G. and Batyunya, B. and Bauri, D. and Alba, J. L. Bazo and and Bearden, I. G. and Beattie, C. and Bedda, C. and Behera, N. K. and and Belikov, I and Hechavarria, A. D. C. Bell and Bellini, F. and Bellwied, and R. and Belyaev, V and Bencedi, G. and Beole, S. and Bercuci, A. and and Berdnikov, Y. and Berenyi, D. and Bertens, R. A. and Berzano, D. and and Besoiu, M. G. and Betev, L. and Bhasin, A. and Bhat, I. 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A. and Volpe, G. and von Haller, B. and and Vorobyev, I and Voscek, D. and Vrlakova, J. and Wagner, B. and and Weber, M. and Weber, S. G. and Wegrzynek, A. and Wenzel, S. C. and and Wessels, J. P. and Wiechula, J. and Wikne, J. and Wilk, G. and and Wilkinson, J. and Willems, G. A. and Willsher, E. and Windelband, B. and and Winn, M. and Witt, W. E. and Wright, J. R. and Wu, Y. and Xu, R. and and Yalcin, S. and Yamaguchi, Y. and Yamakawa, K. and Yang, S. and Yano, S. and and Yin, Z. and Yokoyama, H. and Yoo, I-K and Yoon, J. H. and Yuan, S. and and Yuncu, A. and Yurchenko, V and Zaccolo, V and Zaman, A. and and Zampolli, C. and Zanoli, H. J. C. and Zardoshti, N. and Zarochentsev, A. and and Zavada, P. and Zaviyalov, N. and Zbroszczyk, H. and Zhalov, M. and and Zhang, S. and Zhang, X. and Zhang, Z. and Zherebchevskii, V and Zhou, D. and and Zhou, Y. and Zhou, Z. and Zhu, J. and Zhu, Y. and Zichichi, A. and and Zinovjev, G. and Zurlo, N. and ALICE Collaboration",
    journal = "Physical Review C",
    year = "2021",
    volume = "103",
    number = "5",
    publisher = "AMER PHYSICAL SOC",
    issn = "2469-9985, 2469-9993",
    doi = "10.1103/PhysRevC.103.055201",
    abstract = "The first measurements of the scattering parameters of Lambda K pairs in
all three charge combinations (Lambda K+, Lambda K-, and Lambda K-S(0))
are presented. The results are achieved through a femtoscopic analysis
of Lambda K correlations in Pb-Pb collisions at root s(NN) = 2.76 TeV
recorded by ALICE at the Large Hadron Collider. The femtoscopic
correlations result from strong final-state interactions and are fit
with a parametrization allowing for both the characterization of the
pair emission source and the measurement of the scattering parameters
for the particle pairs. Extensive studies with the THERMINATOR 2 event
generator provide a good description of the nonfemtoscopic background,
which results mainly from collective effects, with unprecedented
precision. Furthermore, together with HIJING simulations, this model is
used to account for contributions from residual correlations induced by
feed-down from particle decays. The extracted scattering parameters
indicate that the strong force is repulsive in the Lambda K+ interaction
and attractive in the Lambda K- interaction. The data hint that the
Lambda K-S(0) interaction is attractive; however, the uncertainty of the
result does not permit such a decisive conclusion. The results suggest
an effect arising either from different quark-antiquark interactions
between the pairs (s (s) over bar in Lambda K+ and u (u) over bar in
Lambda K-) or from different net strangeness for each system (S = 0 for
Lambda K+, and S = -2 for Lambda K-). Finally, the Lambda K systems
exhibit source radii larger than expected from extrapolation from
identical particle femtoscopic studies. This effect is interpreted as
resulting from the separation in space-time of the single-particle
Lambda and K source distributions."
}