Measurement of antiproton production from antihyperon decays in $${p} \textrm{He}$$ collisions at $$\sqrt{s_{\scriptscriptstyle \mathrm NN}} =110$$ $$\,\text {Ge\hspace{-1.00006pt}V}$$-Reference-Cited by-同舟云学术

Measurement of antiproton production from antihyperon decays in $${p} \textrm{He}$$ collisions at $$\sqrt{s_{\scriptscriptstyle \mathrm NN}} =110$$ $$\,\text {Ge\hspace{-1.00006pt}V}$$

Published:2023-06-27 Issue:6 Volume:83 Page:
ISSN:1434-6052
Container-title:The European Physical Journal C
language:en
Short-container-title:Eur. Phys. J. C

Author:

Aaij R.^ORCID,Abdelmotteleb A. S. W.^ORCID,Beteta C. Abellan,Abudinén F.^ORCID,Ackernley T.^ORCID,Adeva B.^ORCID,Adinolfi M.^ORCID,Afsharnia H.,Agapopoulou C.^ORCID,Aidala C. A.^ORCID,Aiola S.^ORCID,Ajaltouni Z.,Akar S.^ORCID,Akiba K.^ORCID,Albrecht J.^ORCID,Alessio F.^ORCID,Alexander M.^ORCID,Alfonso Albero A.^ORCID,Aliouche Z.^ORCID,Alvarez Cartelle P.^ORCID,Amato S.^ORCID,Amey J. L.^ORCID,Amhis Y.^ORCID,An L.^ORCID,Anderlini L.^ORCID,Andersson M.^ORCID,Andreianov A.^ORCID,Andreotti M.^ORCID,Andreou D.^ORCID,Ao D.^ORCID,Archilli F.^ORCID,Artamonov A.^ORCID,Artuso M.^ORCID,Aslanides E.^ORCID,Atzeni M.^ORCID,Audurier B.^ORCID,Bachmann S.^ORCID,Bachmayer M.^ORCID,Back J. J.^ORCID,Bailly-reyre A.,Baladron Rodriguez P.^ORCID,Balagura V.^ORCID,Baldini W.^ORCID,Baptista de Souza Leite J.^ORCID,Barbetti M.^ORCID,Barlow R. J.^ORCID,Barsuk S.^ORCID,Barter W.^ORCID,Bartolini M.^ORCID,Baryshnikov F.^ORCID,Basels J. M.^ORCID,Bassi G.^ORCID,Batsukh B.^ORCID,Battig A.^ORCID,Bay A.^ORCID,Beck A.^ORCID,Becker M.^ORCID,Bedeschi F.^ORCID,Bediaga I. B.^ORCID,Beiter A.,Belavin V.,Belin S.^ORCID,Bellee V.^ORCID,Belous K.^ORCID,Belov I.^ORCID,Belyaev I.^ORCID,Bencivenni G.^ORCID,Ben-Haim E.^ORCID,Berezhnoy A.^ORCID,Bernet R.^ORCID,Berninghoff D.,Bernstein H. C.,Bertella C.^ORCID,Bertolin A.^ORCID,Betancourt C.^ORCID,Betti F.^ORCID,Bezshyiko Ia.^ORCID,Bhasin S.^ORCID,Bhom J.^ORCID,Bian L.^ORCID,Bieker M. S.^ORCID,Biesuz N. V.^ORCID,Bifani S.^ORCID,Billoir P.^ORCID,Biolchini A.^ORCID,Birch M.^ORCID,Bishop F. C. R.^ORCID,Bitadze A.^ORCID,Bizzeti A.^ORCID,Blago M. P.^ORCID,Blake T.^ORCID,Blanc F.^ORCID,Blusk S.^ORCID,Bobulska D.^ORCID,Boelhauve J. A.^ORCID,Boente Garcia O.^ORCID,Boettcher T.^ORCID,Boldyrev A.^ORCID,Bondar N.^ORCID,Borghi S.^ORCID,Borsato M.^ORCID,Borsuk J. T.^ORCID,Bouchiba S. A.^ORCID,Bowcock T. J. V.^ORCID,Boyer A.^ORCID,Bozzi C.^ORCID,Bradley M. 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A.^ORCID,Chefdeville M.^ORCID,Chen C.^ORCID,Chen S.^ORCID,Chernov A.^ORCID,Chernyshenko S.^ORCID,Chobanova V.^ORCID,Cholak S.^ORCID,Chrzaszcz M.^ORCID,Chubykin A.^ORCID,Chulikov V.^ORCID,Ciambrone P.^ORCID,Cicala M. F.^ORCID,Cid Vidal X.^ORCID,Ciezarek G.^ORCID,Ciullo G.^ORCID,Clarke P. E. L.^ORCID,Clemencic M.^ORCID,Cliff H. V.^ORCID,Closier J.^ORCID,Cobbledick J. L.^ORCID,Coco V.^ORCID,Coelho J. A. B.^ORCID,Cogan J.^ORCID,Cogneras E.^ORCID,Cojocariu L.^ORCID,Collins P.^ORCID,Colombo T.^ORCID,Congedo L.^ORCID,Contu A.^ORCID,Cooke N.^ORCID,Coombs G.^ORCID,Corredoira I.^ORCID,Corti G.^ORCID,Couturier B.^ORCID,Craik D. C.^ORCID,Crkovská J.^ORCID,Cruz Torres M.^ORCID,Currie R.^ORCID,Da Silva C. L.^ORCID,Dadabaev S.^ORCID,Dai L.^ORCID,Dall’Occo E.^ORCID,Dalseno J.^ORCID,D’Ambrosio C.^ORCID,Danilina A.^ORCID,d’Argent P.^ORCID,Davies J. 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A.^ORCID,Fu J.^ORCID,Fuehring Q.^ORCID,Gabriel E.^ORCID,Galati G.^ORCID,Gallas Torreira A.^ORCID,Galli D.^ORCID,Gambetta S.^ORCID,Gan Y.^ORCID,Gandelman M.^ORCID,Gandini P.^ORCID,Gao Y.^ORCID,Garau M.^ORCID,Garcia Martin L. M.^ORCID,Garcia Moreno P.^ORCID,García Pardiñas J.^ORCID,Garcia Plana B.,Garcia Rosales F. A.^ORCID,Garrido L.^ORCID,Gaspar C.^ORCID,Geertsema R. E.^ORCID,Gerick D.,Gerken L. L.^ORCID,Gersabeck E.^ORCID,Gersabeck M.^ORCID,Gershon T.^ORCID,Giambastiani L.^ORCID,Gibson V.^ORCID,Giemza H. K.^ORCID,Gilman A. L.^ORCID,Giovannetti M.^ORCID,Gioventù A.^ORCID,Gironella Gironell P.^ORCID,Giugliano C.^ORCID,Giza M. A.^ORCID,Gizdov K.^ORCID,Gkougkousis E. L.^ORCID,Gligorov V. V.^ORCID,Göbel C.^ORCID,Golobardes E.^ORCID,Golubkov D.^ORCID,Golutvin A.^ORCID,Gomes A.^ORCID,Gomez Fernandez S.^ORCID,Goncalves Abrantes F.^ORCID,Goncerz M.^ORCID,Gong G.^ORCID,Gorelov I. V.^ORCID,Gotti C.^ORCID,Grabowski J. P.^ORCID,Grammatico T.^ORCID,Granado Cardoso L. 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Abstract

AbstractThe interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5

$$\,\text {Te\hspace{-1.00006pt}V}$$

Te V incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and

$$110\,\text {Ge\hspace{-1.00006pt}V\!/}c $$

110 Ge V\!/ c . The dominant antihyperon contribution, namely

$${\overline{\varLambda }} \rightarrow {\overline{{p}}} {{\pi } ^+} $$

Λ ¯ → p ¯ π + decays from promptly produced

$$\overline{\varLambda }$$

Λ ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous),Engineering (miscellaneous)

Link

https://link.springer.com/content/pdf/10.1140/epjc/s10052-023-11673-x.pdf

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