CERN Accelerating science

Preprint
Report number	arXiv:2412.03186 ; CERN-EP-2024-309
Title	First Measurement of the Muon Neutrino Interaction Cross Section and Flux as a Function of Energy at the LHC with FASER
Author(s)	Mammen Abraham, Roshan (UC, Irvine) ; Ai, Xiaocong (Zhengzhou U.) ; Anders, John (CERN) ; Antel, Claire (U. Geneva (main)) ; Ariga, Akitaka (Bern U., LHEP ; Chiba U.) ; Ariga, Tomoko (Kyushu U., Fukuoka (main)) ; Atkinson, Jeremy (Bern U., LHEP) ; Bernlochner, Florian U. (U. Bonn (main)) ; Boeckh, Tobias (U. Bonn (main)) ; Boyd, Jamie (CERN) ; Brenner, Lydia (NIKHEF, Amsterdam) ; Burger, Angela (CERN) ; Cadoux, Franck (U. Geneva (main)) ; Cardella, Roberto (U. Geneva (main)) ; Casper, David W. (UC, Irvine) ; Cavanagh, Charlotte (Zurich, ETH) ; Chen, Xin (Tsinghua U., Beijing) ; Chouhan, Dhruv (U. Bonn (main)) ; Coccaro, Andrea (INFN, Genoa) ; Débieux, Stephane (U. Geneva (main)) ; D'Onofrio, Monica (U. Liverpool (main)) ; Desai, Ansh (U. Oregon, Eugene (main)) ; Dmitrievsky, Sergey (Unlisted) ; Dobre, Radu (Bucharest, Inst. Space Science) ; Eley, Sinead (U. Liverpool (main)) ; Favre, Yannick (U. Geneva (main)) ; Fellers, Deion (U. Oregon, Eugene (main)) ; Feng, Jonathan L. (UC, Irvine) ; Fenoglio, Carlo Alberto (U. Geneva (main)) ; Ferrere, Didier (U. Geneva (main)) ; Fieg, Max (UC, Irvine) ; Filali, Wissal (U. Bonn (main)) ; Firu, Elena (Bucharest, Inst. Space Science) ; Garabaglu, Ali (Washington U., Seattle) ; Gibson, Stephen (Royal Holloway, U. of London) ; Gonzalez-Sevilla, Sergio (U. Geneva (main)) ; Gornushkin, Yuri (Unlisted) ; Gwilliam, Carl (U. Liverpool (main)) ; Hayakawa, Daiki (Chiba U.) ; Holzbock, Michael (CERN) ; Hsu, Shih-Chieh (Washington U., Seattle) ; Hu, Zhen (Tsinghua U., Beijing) ; Iacobucci, Giuseppe (U. Geneva (main)) ; Inada, Tomohiro (Kyushu U., Fukuoka (main)) ; Iodice, Luca (U. Geneva (main)) ; Jakobsen, Sune (CERN) ; Joos, Hans (CERN ; Gottingen U., II. Phys. Inst.) ; Kajomovitz, Enrique (Technion) ; Kawahara, Hiroaki (Kyushu U., Fukuoka (main)) ; Keyken, Alex (Royal Holloway, U. of London) ; Kling, Felix (DESY) ; Köck, Daniela (U. Oregon, Eugene (main)) ; Kontaxakis, Pantelis (U. Geneva (main)) ; Kose, Umut (Zurich, ETH) ; Kotitsa, Rafaella (CERN) ; Kuehn, Susanne (CERN) ; Kugathasan, Thanushan (U. Geneva (main)) ; Levinson, Lorne (Weizmann Inst.) ; Li, Ke (Washington U., Seattle) ; Liu, Jinfeng (Tsinghua U., Beijing) ; Liu, Yi (Zhengzhou U.) ; Lutz, Margaret S. (CERN) ; MacDonald, Jack (Mainz U.) ; Magliocca, Chiara (U. Geneva (main)) ; Mäkelä, Toni (UC, Irvine) ; McCoy, Lawson (UC, Irvine) ; McFayden, Josh (U. Sussex (main)) ; Medina, Andrea Pizarro (U. Geneva (main)) ; Milanesio, Matteo (U. Geneva (main)) ; Moretti, Théo (U. Geneva (main)) ; Nakamura, Mitsuhiro (Nagoya U. (main)) ; Nakano, Toshiyuki (Nagoya U. (main)) ; Nevay, Laurie (CERN) ; Ohashi, Ken (Bern U., LHEP) ; Otono, Hidetoshi (Kyushu U., Fukuoka (main)) ; Pang, Hao (Tsinghua U., Beijing) ; Paolozzi, Lorenzo (U. Geneva (main) ; CERN) ; Pawan, Pawan (U. Liverpool (main)) ; Petersen, Brian (CERN) ; Preda, Titi (Bucharest, Inst. Space Science) ; Prim, Markus (U. Bonn (main)) ; Queitsch-Maitland, Michaela (U. Manchester (main)) ; Rokujo, Hiroki (Nagoya U. (main)) ; Rubbia, André (Zurich, ETH) ; Sabater-Iglesias, Jorge (U. Geneva (main)) ; Sato, Osamu (Nagoya U. (main)) ; Scampoli, Paola (Bern U., LHEP ; U. Naples (main)) ; Schmieden, Kristof (Mainz U.) ; Schott, Matthias (Mainz U.) ; Sfyrla, Anna (U. Geneva (main)) ; Sgalaberna, Davide (Zurich, ETH) ; Shamim, Mansoora (CERN) ; Shively, Savannah (UC, Irvine) ; Takubo, Yosuke (Niihama Tech. Coll.) ; Tarannum, Noshin (U. Geneva (main)) ; Theiner, Ondrej (U. Geneva (main)) ; Torrence, Eric (U. Oregon, Eugene (main)) ; Martinez, Oscar Ivan Valdes (U. Manchester (main)) ; Vasina, Svetlana (Unlisted) ; Vormwald, Benedikt (CERN) ; Wang, Di (Tsinghua U., Beijing) ; Wang, Yuxiao (Tsinghua U., Beijing) ; Welch, Eli (UC, Irvine) ; Wielers, Monika (Rutherford) ; Xu, Yue (Washington U., Seattle) ; Zahorec, Samuel (CERN ; Charles U.) ; Zambito, Stefano (U. Geneva (main)) ; Zhang, Shunliang (Tsinghua U., Beijing)
Corporate author(s)	The FASER collaboration
Publication	2024
Imprint	02 Dec 2024
Number of pages	15
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; FASER
Keywords	electroweak interaction ; QCD ; forward physics ; lepton production ; experimental results ; FASER neutrino
Abstract	This letter presents the measurement of the energy-dependent neutrino-nucleon cross section in tungsten and the differential flux of muon neutrinos and anti-neutrinos. The analysis is performed using proton-proton collision data at a center-of-mass energy of 13.6 TeV and corresponding to an integrated luminosity of (65.6 ± 1.4) fb−1. Using the active electronic components of the FASER detector, 338.1 ± 21.0 charged current muon neutrino interaction events are identified, with backgrounds from other processes subtracted. We unfold the neutrino events into a fiducial volume corresponding to the sensitive regions of the FASER detector and interpret the results in two ways: We use the expected neutrino flux to measure the cross section, and we use the predicted cross section to measure the neutrino flux. Both results are presented in six bins of neutrino energy, achieving the first differential measurement in the TeV range. The observed distributions align with Standard Model predictions. Using this differential data, we extract the contributions of neutrinos from pion and kaon decays.
Other source	Inspire
Copyright/License	Preprint: © 2024 CERN (License: CC-BY-4.0)
Submitted by	jamie.boyd@cern.ch