From Ds± production asymmetry at the LHC to prompt ντ at IceCube
The description of the heavy meson production at large energies and forward rapidities at the LHC is fundamental to derive realistic predictions of the prompt atmospheric neutrino flux at the IceCube Observatory. In particular, the prompt tau neutrino flux is determined by the decay of Ds mesons pro...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-07-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319303363 |
| _version_ | 1818700432511336448 |
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| author | Victor P. Goncalves Rafał Maciuła Antoni Szczurek |
| author_facet | Victor P. Goncalves Rafał Maciuła Antoni Szczurek |
| author_sort | Victor P. Goncalves |
| collection | DOAJ |
| description | The description of the heavy meson production at large energies and forward rapidities at the LHC is fundamental to derive realistic predictions of the prompt atmospheric neutrino flux at the IceCube Observatory. In particular, the prompt tau neutrino flux is determined by the decay of Ds mesons produced in cosmic ray–air interactions at high energies and large values of the Feynman-xF variable. Recent data of the LHCb Collaboration indicate a production asymmetry for Ds+ and Ds− mesons, which cannot be explained in terms of the standard modeling of the hadronization process. In this paper we demonstrate that this asymmetry can be described assuming an asymmetric strange sea (s(x)≠s¯(x)) in the proton wave function and taking into account the dominant charm and subdominant strange fragmentation into Ds mesons. Moreover, we show that the strange quark fragmentation contribution is dominant at large-xF (≥0.3). The prompt ντ flux is calculated and the enhancement associated with the strange quark fragmentation contribution, disregarded in previous calculations, is estimated. The considered scenario leads to quite sizable enhancement of the high-energy τ-neutrino flux. |
| first_indexed | 2024-12-17T15:04:51Z |
| format | Article |
| id | doaj.art-f5b9cfce95f2496fba1d67ff4bc82dcd |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-17T15:04:51Z |
| publishDate | 2019-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-f5b9cfce95f2496fba1d67ff4bc82dcd2022-12-21T21:43:49ZengElsevierPhysics Letters B0370-26932019-07-017942935From Ds± production asymmetry at the LHC to prompt ντ at IceCubeVictor P. Goncalves0Rafał Maciuła1Antoni Szczurek2Instituto de Física e Matemática, Universidade Federal de Pelotas (UFPel), Caixa Postal 354, CEP 96010-900, Pelotas, RS, Brazil; Corresponding authors.Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, PL-31-342 Kraków, PolandInstitute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, PL-31-342 Kraków, Poland; Corresponding authors.The description of the heavy meson production at large energies and forward rapidities at the LHC is fundamental to derive realistic predictions of the prompt atmospheric neutrino flux at the IceCube Observatory. In particular, the prompt tau neutrino flux is determined by the decay of Ds mesons produced in cosmic ray–air interactions at high energies and large values of the Feynman-xF variable. Recent data of the LHCb Collaboration indicate a production asymmetry for Ds+ and Ds− mesons, which cannot be explained in terms of the standard modeling of the hadronization process. In this paper we demonstrate that this asymmetry can be described assuming an asymmetric strange sea (s(x)≠s¯(x)) in the proton wave function and taking into account the dominant charm and subdominant strange fragmentation into Ds mesons. Moreover, we show that the strange quark fragmentation contribution is dominant at large-xF (≥0.3). The prompt ντ flux is calculated and the enhancement associated with the strange quark fragmentation contribution, disregarded in previous calculations, is estimated. The considered scenario leads to quite sizable enhancement of the high-energy τ-neutrino flux.http://www.sciencedirect.com/science/article/pii/S0370269319303363 |
| spellingShingle | Victor P. Goncalves Rafał Maciuła Antoni Szczurek From Ds± production asymmetry at the LHC to prompt ντ at IceCube Physics Letters B |
| title | From Ds± production asymmetry at the LHC to prompt ντ at IceCube |
| title_full | From Ds± production asymmetry at the LHC to prompt ντ at IceCube |
| title_fullStr | From Ds± production asymmetry at the LHC to prompt ντ at IceCube |
| title_full_unstemmed | From Ds± production asymmetry at the LHC to prompt ντ at IceCube |
| title_short | From Ds± production asymmetry at the LHC to prompt ντ at IceCube |
| title_sort | from ds production asymmetry at the lhc to prompt ντ at icecube |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319303363 |
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