First Measurement of the $ν_e$ and $ν_μ$ Interaction Cross Sections at the LHC with FASER's Emulsion Detector
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arXiv
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| Natura: | Preprint |
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2024
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| author | FASER Collaboration Abraham, Roshan Mammen Anders, John Antel, Claire Ariga, Akitaka Ariga, Tomoko Atkinson, Jeremy Bernlochner, Florian U. Boeckh, Tobias Boyd, Jamie Brenner, Lydia Burger, Angela Cadoux, Franck Cardella, Roberto Casper, David W. Cavanagh, Charlotte Chen, Xin Coccaro, Andrea Debieux, Stephane D'Onofrio, Monica Desai, Ansh Dmitrievsky, Sergey Eley, Sinead Favre, Yannick Fellers, Deion Feng, Jonathan L. Fenoglio, Carlo Alberto Ferrere, Didier Fieg, Max Filali, Wissal Fujimori, Haruhi Garabaglu, Ali Gibson, Stephen Gonzalez-Sevilla, Sergio Gornushkin, Yuri Gwilliam, Carl Hayakawa, Daiki Hsu, Shih-Chieh Hu, Zhen Iacobucci, Giuseppe Inada, Tomohiro Iodice, Luca Jakobsen, Sune Joos, Hans Kajomovitz, Enrique Kanai, Takumi Kawahara, Hiroaki Keyken, Alex Kling, Felix Kock, Daniela Kontaxakis, Pantelis Kose, Umut Kotitsa, Rafaella Kuehn, Susanne Kugathasan, Thanushan Lefebvre, Helena Levinson, Lorne Li, Ke Liu, Jinfeng Lutz, Margaret S. MacDonald, Jack Magliocca, Chiara Martinelli, Fulvio McCoy, Lawson McFayden, Josh Medina, Andrea Pizarro Milanesio, Matteo Moretti, Theo Munker, Magdalena Nakamura, Mitsuhiro Nakano, Toshiyuki Neuhaus, Friedemann Nevay, Laurie Nonaka, Motoya Okui, Kazuaki Ohashi, Ken Otono, Hidetoshi Pang, Hao Paolozzi, Lorenzo Petersen, Brian Prim, Markus Queitsch-Maitland, Michaela Rokujo, Hiroki Ruiz-Choliz, Elisa Rubbia, André Sabater-Iglesias, Jorge Sato, Osamu Scampoli, Paola Schmieden, Kristof Schott, Matthias Sfyrla, Anna Shamim, Mansoora Shively, Savannah Takubo, Yosuke Tarannum, Noshin Theiner, Ondrej Torrence, Eric Vasina, Svetlana Vormwald, Benedikt Wang, Di Wang, Yuxiao Welch, Eli Zahorec, Samuel Zambito, Stefano Zhang, Shunliang |
| author_facet | FASER Collaboration Abraham, Roshan Mammen Anders, John Antel, Claire Ariga, Akitaka Ariga, Tomoko Atkinson, Jeremy Bernlochner, Florian U. Boeckh, Tobias Boyd, Jamie Brenner, Lydia Burger, Angela Cadoux, Franck Cardella, Roberto Casper, David W. Cavanagh, Charlotte Chen, Xin Coccaro, Andrea Debieux, Stephane D'Onofrio, Monica Desai, Ansh Dmitrievsky, Sergey Eley, Sinead Favre, Yannick Fellers, Deion Feng, Jonathan L. Fenoglio, Carlo Alberto Ferrere, Didier Fieg, Max Filali, Wissal Fujimori, Haruhi Garabaglu, Ali Gibson, Stephen Gonzalez-Sevilla, Sergio Gornushkin, Yuri Gwilliam, Carl Hayakawa, Daiki Hsu, Shih-Chieh Hu, Zhen Iacobucci, Giuseppe Inada, Tomohiro Iodice, Luca Jakobsen, Sune Joos, Hans Kajomovitz, Enrique Kanai, Takumi Kawahara, Hiroaki Keyken, Alex Kling, Felix Kock, Daniela Kontaxakis, Pantelis Kose, Umut Kotitsa, Rafaella Kuehn, Susanne Kugathasan, Thanushan Lefebvre, Helena Levinson, Lorne Li, Ke Liu, Jinfeng Lutz, Margaret S. MacDonald, Jack Magliocca, Chiara Martinelli, Fulvio McCoy, Lawson McFayden, Josh Medina, Andrea Pizarro Milanesio, Matteo Moretti, Theo Munker, Magdalena Nakamura, Mitsuhiro Nakano, Toshiyuki Neuhaus, Friedemann Nevay, Laurie Nonaka, Motoya Okui, Kazuaki Ohashi, Ken Otono, Hidetoshi Pang, Hao Paolozzi, Lorenzo Petersen, Brian Prim, Markus Queitsch-Maitland, Michaela Rokujo, Hiroki Ruiz-Choliz, Elisa Rubbia, André Sabater-Iglesias, Jorge Sato, Osamu Scampoli, Paola Schmieden, Kristof Schott, Matthias Sfyrla, Anna Shamim, Mansoora Shively, Savannah Takubo, Yosuke Tarannum, Noshin Theiner, Ondrej Torrence, Eric Vasina, Svetlana Vormwald, Benedikt Wang, Di Wang, Yuxiao Welch, Eli Zahorec, Samuel Zambito, Stefano Zhang, Shunliang |
| contents | This paper presents the first results of the study of high-energy electron and muon neutrino charged-current interactions in the FASER$ν$ emulsion/tungsten detector of the FASER experiment at the LHC. A subset of the FASER$ν$ volume, which corresponds to a target mass of 128.6~kg, was exposed to neutrinos from the LHC $pp$ collisions with a centre-of-mass energy of 13.6~TeV and an integrated luminosity of 9.5 fb$^{-1}$. Applying stringent selections requiring electrons with reconstructed energy above 200~GeV, four electron neutrino interaction candidate events are observed with an expected background of $0.025^{+0.015}_{-0.010}$, leading to a statistical significance of 5.2$σ$. This is the first direct observation of electron neutrino interactions at a particle collider. Eight muon neutrino interaction candidate events are also detected, with an expected background of $0.22^{+0.09}_{-0.07}$, leading to a statistical significance of 5.7$σ$. The signal events include neutrinos with energies in the TeV range, the highest-energy electron and muon neutrinos ever detected from an artificial source. The energy-independent part of the interaction cross section per nucleon is measured over an energy range of 560--1740 GeV (520--1760 GeV) for $ν_e$ ($ν_μ$) to be $(1.2_{-0.7}^{+0.8}) \times 10^{-38}~\mathrm{cm}^{2}\,\mathrm{GeV}^{-1}$ ($(0.5\pm0.2) \times 10^{-38}~\mathrm{cm}^{2}\,\mathrm{GeV}^{-1}$), consistent with Standard Model predictions. These are the first measurements of neutrino interaction cross sections in those energy ranges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_12520 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | First Measurement of the $ν_e$ and $ν_μ$ Interaction Cross Sections at the LHC with FASER's Emulsion Detector FASER Collaboration Abraham, Roshan Mammen Anders, John Antel, Claire Ariga, Akitaka Ariga, Tomoko Atkinson, Jeremy Bernlochner, Florian U. Boeckh, Tobias Boyd, Jamie Brenner, Lydia Burger, Angela Cadoux, Franck Cardella, Roberto Casper, David W. Cavanagh, Charlotte Chen, Xin Coccaro, Andrea Debieux, Stephane D'Onofrio, Monica Desai, Ansh Dmitrievsky, Sergey Eley, Sinead Favre, Yannick Fellers, Deion Feng, Jonathan L. Fenoglio, Carlo Alberto Ferrere, Didier Fieg, Max Filali, Wissal Fujimori, Haruhi Garabaglu, Ali Gibson, Stephen Gonzalez-Sevilla, Sergio Gornushkin, Yuri Gwilliam, Carl Hayakawa, Daiki Hsu, Shih-Chieh Hu, Zhen Iacobucci, Giuseppe Inada, Tomohiro Iodice, Luca Jakobsen, Sune Joos, Hans Kajomovitz, Enrique Kanai, Takumi Kawahara, Hiroaki Keyken, Alex Kling, Felix Kock, Daniela Kontaxakis, Pantelis Kose, Umut Kotitsa, Rafaella Kuehn, Susanne Kugathasan, Thanushan Lefebvre, Helena Levinson, Lorne Li, Ke Liu, Jinfeng Lutz, Margaret S. MacDonald, Jack Magliocca, Chiara Martinelli, Fulvio McCoy, Lawson McFayden, Josh Medina, Andrea Pizarro Milanesio, Matteo Moretti, Theo Munker, Magdalena Nakamura, Mitsuhiro Nakano, Toshiyuki Neuhaus, Friedemann Nevay, Laurie Nonaka, Motoya Okui, Kazuaki Ohashi, Ken Otono, Hidetoshi Pang, Hao Paolozzi, Lorenzo Petersen, Brian Prim, Markus Queitsch-Maitland, Michaela Rokujo, Hiroki Ruiz-Choliz, Elisa Rubbia, André Sabater-Iglesias, Jorge Sato, Osamu Scampoli, Paola Schmieden, Kristof Schott, Matthias Sfyrla, Anna Shamim, Mansoora Shively, Savannah Takubo, Yosuke Tarannum, Noshin Theiner, Ondrej Torrence, Eric Vasina, Svetlana Vormwald, Benedikt Wang, Di Wang, Yuxiao Welch, Eli Zahorec, Samuel Zambito, Stefano Zhang, Shunliang High Energy Physics - Experiment High Energy Physics - Phenomenology Instrumentation and Detectors This paper presents the first results of the study of high-energy electron and muon neutrino charged-current interactions in the FASER$ν$ emulsion/tungsten detector of the FASER experiment at the LHC. A subset of the FASER$ν$ volume, which corresponds to a target mass of 128.6~kg, was exposed to neutrinos from the LHC $pp$ collisions with a centre-of-mass energy of 13.6~TeV and an integrated luminosity of 9.5 fb$^{-1}$. Applying stringent selections requiring electrons with reconstructed energy above 200~GeV, four electron neutrino interaction candidate events are observed with an expected background of $0.025^{+0.015}_{-0.010}$, leading to a statistical significance of 5.2$σ$. This is the first direct observation of electron neutrino interactions at a particle collider. Eight muon neutrino interaction candidate events are also detected, with an expected background of $0.22^{+0.09}_{-0.07}$, leading to a statistical significance of 5.7$σ$. The signal events include neutrinos with energies in the TeV range, the highest-energy electron and muon neutrinos ever detected from an artificial source. The energy-independent part of the interaction cross section per nucleon is measured over an energy range of 560--1740 GeV (520--1760 GeV) for $ν_e$ ($ν_μ$) to be $(1.2_{-0.7}^{+0.8}) \times 10^{-38}~\mathrm{cm}^{2}\,\mathrm{GeV}^{-1}$ ($(0.5\pm0.2) \times 10^{-38}~\mathrm{cm}^{2}\,\mathrm{GeV}^{-1}$), consistent with Standard Model predictions. These are the first measurements of neutrino interaction cross sections in those energy ranges. |
| title | First Measurement of the $ν_e$ and $ν_μ$ Interaction Cross Sections at the LHC with FASER's Emulsion Detector |
| topic | High Energy Physics - Experiment High Energy Physics - Phenomenology Instrumentation and Detectors |
| url | https://arxiv.org/abs/2403.12520 |