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Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Journal 01 Oct 2019Embargo end date: 01 Jan 2019 Italy, Italy, United States, Greece, Germany, Italy, Croatia, Italy, France, Italy, Norway, Italy, Turkey, Italy, Italy, Norway, Italy, Turkey, Finland, Italy, Italy, Germany, Netherlands, Turkey, Norway, Croatia, Italy, Finland, Hungary, Italy, Norway, Croatia, Italy, Hungary, Turkey, Croatia, Croatia, Germany, Norway, Italy, United Kingdom, Italy, Netherlands, Croatia, Italy, United Kingdom Publisher:Elsevier BVJournal:Physics Letters B, volume 797, page 134,822 (issn: 0370-2693,

Authors: Acharya, S.; Adamova, D.; Adhya, S.P.; Adler, A.; and; Adolfsson, J.; Aggarwal, M.M.; +193 Authors

Acharya, S.; Adamova, D.; Adhya, S.P.; Adler, A.; and; Adolfsson, J.; Aggarwal, M.M.; Rinella, G.; Aglieri; Agnello,; M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S.U.; Aiola, S.; Akindinov, A.; Al-Turany, M.; Alam, S.N.; Albuquerque, D.S.; D.; Aleksandrov, D.; Alessandro, B.; Alfanda, H.M.; Alfaro Molina, R.; Ali, B.; Ali, Y.; Alici,; A.; Alkin, A.; Alme, J.; Alt, T.; Altenkamper, L.; Altsybeev, I; Anaam, M.N.; Andrei, C.; Andreou, D.; Andrews, H.A.; Andronic, A.; Angeletti, M.; Anguelov, V and; Anson, C.; Anticic, T.; Antinori, F.; Antonioli, P.; Anwar,; R.; Apadula, N.; Aphecetche, L.; Appelshaeuser, H.; Arcelli,; S.; Arnaldi, R.; Arratia, M.; Arsene, I.C.; Arslandok, M.; and Augustinus, A.; Averbeck, R.; Aziz, S.; Azmi, M.D.; Badala, A.; Baek, Y.W.; Bagnasco, S.; Bailhache, R.; Bala,; Baldisseri, A.; Ball, M.; Baral, R.C.; Barbera, R.; Barioglio, L.; Barnafoldi, G.G.; Barnby, L.S.; Barret, V and; Bartalini, P.; Barth, K.; Bartsch, E.; Bastid, N.; Basu, S.; and Batigne, G.; Batyunya, B.; Batzing, P.C.; Bauri, D.; Bazo Alba, J.L.; Bearden, I.G.; Bedda, C.; Behera, N.K.; Belikov, I; Bellini, F.; Bellwied, R.; Beltran, L.G.; E.; Belyaev, V; Bencedi, G.; Beole, S.; Bercuci, A.; Berdnikov,; Y.; Berenyi, D.; Bertens, R.A.; Berzano, D.; Betev, L.; Bhasin, A.; Bhat, I.R.; Bhatt, H.; Bhattacharjee, B.; Bianchi, A.; Bianchi, L.; Bianchi, N.; Bielcik, J.; Bielcikova, J.; Bilandzic, A.; Biro, G.; Biswas, R.; Biswas,; Blair, J.T.; Blau, D.; Blume, C.; Boca, G.; Bock, F.; and Bogdanov, A.; Boldizsar, L.; Bolozdynya, A.; Bombara, M.; and Bonomi, G.; Bonora, M.; Borel, H.; Borissov, A.; Borri,; Bossi, H.; Botta, E.; Bourjau, C.; Bratrud, L.; Braun-Munzinger, P.; Bregant, M.; Broker, T.A.; Broz, M.; Brucken, E.J.; Bruna, E.; Bruno, G.E.; Buckland, M.D.; Budnikov, D.; Buesching, H.; Bufalino, S.; Bugnon, O.; Buhler, P.; Buncic, P.; Busch, O.; Buthelezi, Z.; Butt, J.; B.; Buxton, J.T.; Caffarri, D.; Caliva, A.; Calvo Villar,; Camacho, R.S.; Camerini, P.; Capon, A.A.; Carnesecchi,; F.; Castellanos, J.; Castillo; Castro, A.J.; Casula, E.A.; and Catalano, F.; Sanchez, C.; Ceballos; Chakraborty, P.; Chandra, S.; Chang, B.; Chang, W.; Chapeland, S.; Chartier,; Chattopadhyay, S.; Chauvin, A.; Cheshkov, C.; Cheynis,; Barroso, V.; Chibante; Chinellato, D.D.; Cho, S.; Chochula, P.; Chowdhury, T.; Christakoglou, P.; Christensen, C.; H.; Christiansen, P.; Chujo, T.; Cicalo, C.; Cifarelli, L.; and Cindolo, F.; Cleymans, J.; Colamaria, F.; Colella, D.; Collu, A.; Colocci, M.; Concas, M.; Balbastre, G.; Conesa and; del Valle, Z.; Conesa;

doi: 10.1016/j.physletb.2019.134822 , 10.48550/arxiv.1905.07209

arXiv: http://arxiv.org/abs/1905.07209 , 1905.07209

handle: 11368/2948518 , 10852/75020 , 11250/2632099 , 11250/2633192 , 11583/2848027 , 11577/3340720 , 11379/526881 , 11386/4741085 , 11573/1656708 , 11584/297111 , 11589/206838 , 11585/724456 , 20.500.11769/372470 , 2318/1729902 , 11369/450351 , 11586/263217 , 11571/1296766 , 1956/22496 , 11579/110130

Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC

- Summary
- Subjects

Abstract

This work presents new constraints on the existence and the binding energy of a possible $��$-$��$ bound state, the H-dibaryon, derived from $��$-$��$ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in pp collisions at $\sqrt{s}=13$ TeV and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV, combined with previously published results from p-Pb collisions at $\sqrt{s}=7$ TeV. The $��$-$��$ scattering parameter space, spanned by the inverse scattering length $f_0^{-1}$ and the effective range $d_0$, is constrained by comparing the measured $��$-$��$ correlation function with calculations obtained within the Lednicky model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the $��$-$��$ interaction. The region in the $(f_0^{-1},d_0)$ plane which would accommodate a $��$-$��$ bound state is substantially restricted compared to previous studies. The binding energy of the possible $��$-$��$ bound state is estimated within an effective-range expansion approach and is found to be $B_{��}=3.2^{+1.6}_{-2.4}\mathrm{(stat)}^{+1.8}_{-1.0}\mathrm{(syst)}$ MeV.

21 pages, 4 captioned figures, 1 table, authors from page 16, published version, figures at http://alice-publications.web.cern.ch/node/5288

Countries

Italy, Italy, United States, Greece, Germany, Italy, Croatia, Italy, France, Italy, Norway, Italy, Turkey, Italy, Italy, Norway, Italy, Turkey, Finland, Italy, Italy, Germany, Netherlands, Turkey, Norway, Croatia, Italy, Finland, Hungary, Italy, Norway, Croatia, Italy, Hungary, Turkey, Croatia, Croatia, Germany, Norway, Italy, United Kingdom, Italy, Netherlands, Croatia, Italy, United Kingdom

Related Organizations

Grenoble Alpes University
France
University of Foggia
Italy
Enrico Fermi Center for Study and Research
Italy
University of Padua
Italy
Hungarian Academy of Sciences
Hungary

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Keywords

Fysiikka, hypernucleus, hiukkasfysiikka, pp, Atomic, H-dibaryon, High Energy Physics - Experiment, ALICE; LHC; femtoscopy, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, ALICE, scattering [p p], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], correlation function, interaction [Lambda Lambda], Nuclear Experiment (nucl-ex), info:eu-repo/classification/ddc/530, Nuclear Experiment, Mathematical Physics, heavy-ion experiments, femtoscopic correlations, ALICE experiment, lattice, Ydin- ja kiihdytinfysiikan huippuyksikkö, Physics, ddc:530, VDP::Kjerne- og elementærpartikkelfysikk: 431, Particle and High Energy Physics, Nuclear and Plasma Physics, Nuclear & Particles Physics, expansion: effective range, :Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], Physical sciences, PRIRODNE ZNANOSTI. Fizika., bound state, CERN LHC Coll, the H-dibaryon, VDP::Nuclear and elementary particle physics: 431, Λ–Λ bound state ; H-dibaryon ; femtoscopy ; pp ; p-Pb, Physical Sciences, EXCHANGE-POTENTIAL APPROACH; BARYON-BARYON SCATTERING; HEAVY-ION COLLISIONS; NUCLEON-NUCLEON; HYPERON, Λ–Λ bound state, LHC, Astronomical and Space Sciences, p p: scattering, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], QC1-999, VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431, Mathematical sciences, FOS: Physical sciences, Lambda Lambda: interaction, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Centre of Excellence in Nuclear and Accelerator Based Physics, 530, 5020 GeV-cms/nucleon 7000 GeV-cms/nucleon 13000 GeV-cms/nucleon, femtoscopic measurements, femtoscopy, Nuclear, effective range [expansion], p-Pb, Nuclear Physics, VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431, ta114, Heavy Ion Physics, :Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP], Molecular, --, binding energy, NATURAL SCIENCES. Physics., QC Physics / fizika, scattering length, hypernuclei results, experimental results