First observation of a tau neutrino charged current interaction with charm production in the OPERA experiment OPERA Collaboration

2020-08-01
Agafonova, N.
Aleksandrov, A.
Anokhina, A.
Aoki, S.
Ariga, A.
Ariga, T.
Bertolin, A.
Bozza, C.
Brugnera, R.
Buonaura, A.
Buontempo, S.
Chernyavskiy, M.
Chukanov, A.
Consiglio, L.
D'Ambrosio, N.
De Lellis, G.
De Serio, M.
Sanchez, P. del Amo
Di Crescenzo, A.
Di Ferdinando, D.
Di Marco, N.
Dmitrievski, S.
Dracos, M.
Duchesneau, D.
Dusini, S.
Dzhatdoev, T.
Ebert, J.
Ereditato, A.
Fini, R. A.
Fornari, F.
Fukuda, T.
Galati, G.
Garfagnini, A.
Gentile, V
Goldberg, J.
Gorbunov, S.
Gornushkin, Y.
Grella, G.
Guler, A. M.
Gustavino, C.
Hagner, C.
Hara, T.
Hayakawa, T.
Hollnagel, A.
Ishiguro, K.
Iuliano, A.
Jakovcic, K.
Jollet, C.
Kamiscioglu, C.
Kamışcıoğlu, Mustafa
Kim, S. H.
Kitagawa, N.
Klicek, B.
Kodama, K.
Komatsu, M.
Kose, U.
Kreslo, I
Laudisio, F.
Lauria, A.
Longhin, A.
Loverre, P.
Malgin, A.
Malenica, M.
Mandrioli, G.
Matsuo, T.
Matveev, V
Mauri, N.
Medinaceli, E.
Meregaglia, A.
Mikado, S.
Miyanishi, M.
Mizutani, F.
Monacelli, P.
Montesi, M. C.
Morishima, K.
Muciaccia, M. T.
Naganawa, N.
Naka, T.
Nakamura, M.
Nakano, T.
Niwa, K.
Okateva, N.
Ogawa, S.
Ozaki, K.
Paoloni, A.
Paparella, L.
Park, B. D.
Pasqualini, L.
Pastore, A.
Patrizii, L.
Pessard, H.
Podgrudkov, D.
Polukhina, N.
Pozzato, M.
Pupilli, F.
Roda, M.
Roganova, T.
Rokujo, H.
Rosa, G.
Ryazhskaya, O.
Sato, O.
Schembri, A.
Shakirianova, I
Shchedrina, T.
Shibuya, H.
Shibayama, E.
Shiraishi, T.
Simone, S.
Sirignano, C.
Sirri, G.
Sotnikov, A.
Spinetti, M.
Stanco, L.
Starkov, N.
Stellacci, S. M.
Stipcevic, M.
Strolin, P.
Takahashi, S.
Tenti, M.
Terranova, F.
Tioukov, V
Vasina, S.
Vilain, P.
Voevodina, E.
Votano, L.
Vuilleumier, J. L.
Wilquet, G.
Yoon, C. S.
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
115
views
79
downloads
An event topology with two secondary vertices compatible with the decay of short-lived particles was found in the analysis of neutrino interactions in the OPERA target. The observed topology is compatible with tau neutrino charged current (CC) interactions with charm production and neutrino neutral current (NC) interactions with cc pair production. However, other processes can mimic this topology. A dedicated analysis was implemented to identify the underlying process. A Monte Carlo simulation was developed and complementary procedures were introduced in the kinematic reconstruction. A multivariate analysis technique was used to achieve an optimal separation of signal from background. Most likely, this event is a nu(tau) CC interaction with charm production, the tau and charm particle decaying into 1 prong and 2 prongs, respectively. The significance of this observation is evaluated.
Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
https://hdl.handle.net/11511/53969
EUROPEAN PHYSICAL JOURNAL C
Department of Physics, Article

Suggestions

First measurement of the underlying event activity at the LHC with root s=0.9 TeV
Khachatryan, V.; et. al. (Springer Science and Business Media LLC, 2010-12-01)
A measurement of the underlying activity in scattering processes with p (T) scale in the GeV region is performed in proton-proton collisions at root s = 0.9 TeV, using data collected by the CMS experiment at the LHC. Charged particle production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles forming a jet. Predictions of several QCD-inspired models as implemented in PYTHIA are compared, after full detector simulation, to the data. The m...
Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at root s=8 TeV
Khachatryan, V.; et. al. (Springer Science and Business Media LLC, 2015-02-01)
The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at root s = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb(-1). The electroweak cross section for the lljj final state (with l = e or mu and j representing the quarks produced in the hard interaction) in the kinematic region defined by M-ll > 50 GeV, M-jj > 120 GeV, transverse momentum p(Tj) > 2...
Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
Khachatryan, V.; et. al. (Springer Science and Business Media LLC, 2015-05-01)
Properties of the Higgs boson with mass near 125 GeV are measured in proton-proton collisions with the CMS experiment at the LHC. Comprehensive sets of production and decay measurements are combined. The decay channels include gamma gamma, ZZ, WW, tau tau, bb, and mu mu pairs. The data samples were collected in 2011 and 2012 and correspond to integrated luminosities of up to 5.1 fb(-1) at 7 TeV and up to 19.7 fb(-1) at 8 TeV. From the high-resolution gamma gamma and ZZ channels, the mass of the Higgs boson ...
Observation of the diphoton decay of the Higgs boson and measurement of its properties
Khachatryan, V.; et. al. (Springer Science and Business Media LLC, 2014-10-01)
Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb(-1) at root s = 7 TeV and 19.7 fb(-1) at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7 sigma, wher...
Study of high-p(T) charged particle suppression in PbPb compared to pp collisions at root s(NN)=2.76 TeV
Chatrchyan, S.; et. al. (Springer Science and Business Media LLC, 2012-03-01)
The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at root s(NN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range p(T) = 5-10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 7 compared to the pp yield scaled by the number of incoherent nucleon-nucleon collisions. At higher p(T), this suppression is significantly reduced, approaching roughly a factor of 2 for particles with p(T...
Citation Formats
N. Agafonova et al., “First observation of a tau neutrino charged current interaction with charm production in the OPERA experiment OPERA Collaboration,” EUROPEAN PHYSICAL JOURNAL C, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53969.
METU IIS - Integrated Information Service open@metu.edu.tr