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CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study

We discuss a CMS eXtension for Studying Energetic Neutrinos (CMS-XSEN). Neutrinos at the LHC are abundant and have unique features: their energies reach out to the TeV range, and the contribution of the $\tau$ flavour is sizeable. The measurement of their interaction cross sections has much physics...

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Detalles Bibliográficos
Autores principales: Buontempo, S., Dallavalle, G.M., De Lellis, G., Lazic, D., Navarria, F.L.
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2309742
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author Buontempo, S.
Dallavalle, G.M.
De Lellis, G.
Lazic, D.
Navarria, F.L.
author_facet Buontempo, S.
Dallavalle, G.M.
De Lellis, G.
Lazic, D.
Navarria, F.L.
author_sort Buontempo, S.
collection CERN
description We discuss a CMS eXtension for Studying Energetic Neutrinos (CMS-XSEN). Neutrinos at the LHC are abundant and have unique features: their energies reach out to the TeV range, and the contribution of the $\tau$ flavour is sizeable. The measurement of their interaction cross sections has much physics potential. \\ The pseudorapity range $4<\mid\eta\mid<5$ is of particular interest since leptonic W decays provide an additional contribution to the neutrino flux from b and c production. A modest detector of $4.1\times10^{27}$ nucleons/cm$^2$, placed in the LHC tunnel, 25 m from the interaction point, around the focusing magnet (Q1) closest to CMS, can cover that region. The hadronic calorimeter HF and the CMS forward shield will protect it from the debris of pp collisions. With a luminosity of 300/fb, foreseen for the LHC run in the years 2021-2023, the detector can observe over a thousand $\tau$ neutrino interactions, and a hundred TeV-neutrino interactions of all flavours. \\ Several backgrounds are considered. A major source can be prompt muons from the interaction point. However, the CMS magnetic field and the structure of the forward shield make the estimation of their flux in the location of interest uncertain. Besides, machine induced backgrounds are expected to vary rapidly while moving along and away from the beam line. \\ We propose to acquire experience during the 2018 LHC run by a brief test with a small Neutrino Experiment Demonstrator, based on nuclear emulsions. \\ \\ \\ \\ $a$ INFN, sezione di Napoli, Italy \\ $b$ INFN, sezione di Bologna, Italy \\ $c$ Universit\a`a di Napoli "Federico II" and INFN, sezione di Napoli, Italy \\ $d$ Boston University, USA \\ $e$ Dipartimento di Fisica dell'Universit\a`a and INFN, sezione di Bologna, Italy
id cern-2309742
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
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spelling cern-23097422023-06-29T04:13:44Zhttp://cds.cern.ch/record/2309742engBuontempo, S.Dallavalle, G.M.De Lellis, G.Lazic, D.Navarria, F.L.CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility StudyDetectors and Experimental TechniquesWe discuss a CMS eXtension for Studying Energetic Neutrinos (CMS-XSEN). Neutrinos at the LHC are abundant and have unique features: their energies reach out to the TeV range, and the contribution of the $\tau$ flavour is sizeable. The measurement of their interaction cross sections has much physics potential. \\ The pseudorapity range $4<\mid\eta\mid<5$ is of particular interest since leptonic W decays provide an additional contribution to the neutrino flux from b and c production. A modest detector of $4.1\times10^{27}$ nucleons/cm$^2$, placed in the LHC tunnel, 25 m from the interaction point, around the focusing magnet (Q1) closest to CMS, can cover that region. The hadronic calorimeter HF and the CMS forward shield will protect it from the debris of pp collisions. With a luminosity of 300/fb, foreseen for the LHC run in the years 2021-2023, the detector can observe over a thousand $\tau$ neutrino interactions, and a hundred TeV-neutrino interactions of all flavours. \\ Several backgrounds are considered. A major source can be prompt muons from the interaction point. However, the CMS magnetic field and the structure of the forward shield make the estimation of their flux in the location of interest uncertain. Besides, machine induced backgrounds are expected to vary rapidly while moving along and away from the beam line. \\ We propose to acquire experience during the 2018 LHC run by a brief test with a small Neutrino Experiment Demonstrator, based on nuclear emulsions. \\ \\ \\ \\ $a$ INFN, sezione di Napoli, Italy \\ $b$ INFN, sezione di Bologna, Italy \\ $c$ Universit\a`a di Napoli "Federico II" and INFN, sezione di Napoli, Italy \\ $d$ Boston University, USA \\ $e$ Dipartimento di Fisica dell'Universit\a`a and INFN, sezione di Bologna, ItalyWe discuss a CMS eXtension for Studying Energetic Neutrinos (CMS-XSEN). Neutrinos at the LHC are abundant and have unique features: their energies reach out to the TeV range, and the contribution of the {\tau} flavour is sizeable. The measurement of their interaction cross sections has much physics potential. The pseudorapity range 4<|{\eta}|<5 is of particular interest since leptonic W decays provide an additional contribution to the neutrino flux from b and c production. A modest detector of 4.1x$10^{27}$ nucleons/cm$^{2}$, placed in the LHC tunnel, 25 m from the interaction point, around the focusing magnet (Q1) closest to CMS, can cover that region. The hadronic calorimeter HF and the CMS forward shield will protect it from the debris of pp collisions. With a luminosity of 300/fb, foreseen for the LHC run in the years 2021-2023, the detector can observe over a thousand {\tau} neutrino interactions, and a hundred TeV-neutrino interactions of all flavours. Several backgrounds are considered. A major source can be prompt muons from the interaction point. However, the CMS magnetic field and the structure of the Forward Shield make the estimation of their flux in the location of interest uncertain. Besides, machine induced backgrounds are expected to vary rapidly while moving along and away from the beam line. We propose to acquire experience during the 2018 LHC run by a brief test with a small Neutrino Experiment Demonstrator, based on nuclear emulsions.arXiv:1804.04413CMS NOTE-2018/001CMS-NOTE-2018-001CERN-CMS-NOTE-2018-001oai:cds.cern.ch:23097422018-03-02
spellingShingle Detectors and Experimental Techniques
Buontempo, S.
Dallavalle, G.M.
De Lellis, G.
Lazic, D.
Navarria, F.L.
CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title_full CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title_fullStr CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title_full_unstemmed CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title_short CMS-XSEN: LHC Neutrinos at CMS. Experiment Feasibility Study
title_sort cms-xsen: lhc neutrinos at cms. experiment feasibility study
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/2309742
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AT lazicd cmsxsenlhcneutrinosatcmsexperimentfeasibilitystudy
AT navarriafl cmsxsenlhcneutrinosatcmsexperimentfeasibilitystudy