Particle identification algorithms for the HARP forward spectrometer

Catanesi, M. G.; Radicioni, E.; Edgecock, R.; Ellis, M.; Robbins, S.; Soler, F. J. P.; Gößling, C.; Bunyatov, S.A.; Chelkov, G. A.; Chukanov, A.; Dedovitch, D.; Gostkin, M. I.; Guskov, A.; Khartchenko, D.; Klimov, O.; Krasnoperov, A.; Kroumchtein, Z.V.; Kustov, D.; Nefedov, Y.; Popov, Б.; Serdiouk, V.; Терещенко, В.; Zhemchugov, A.; Capua, E. Di; Vidal–Sitjes, G.; Artamonov, A.; Arce, P.; Gianì, S.; Gilardoni, S.; Gorbunov, P.; Grant, A.; Grossheim, A.; Gruber, Peter M.; Ivanchenko, V. N.; Topaksu, A. Kayis; Panman, J.; Papadopoulos, I.; Pasternak, J.; Tcherniaev, E.; Цукерман, И. И.; Veenhof, R.; Wiebusch, C. H.; Zucchelli, P.; Blondel, A.; Borghi, S.; Campanelli, M.; Cervera-Villanueva, A.; Morone, M. C.; Prior, G.; Schroeter, R.; Kato, I.; Nakaya, T.; Nishikawa, K.; Ueda, S.; Gastaldi, U.; Mills, G. B.; Graulich, J.S.; Grégoire, G.; Bonesini, M.; Min, A. De; Ferri, F.; Paganoni, M.; Paleari, F.; Kirsanov, M.; Bagulya, A.; Grichine, V.; Polukhina, N.; Palladino, V.; Coney, L.; Schmitz, D.; Barr, G.; Santo, A. De; Pattison, C.; Zuber, Κ.; Bobisut, F.; Gibin, D.; Guglielmi, A.; Laveder, M.; Menegolli, A.; Mezzetto, M.; Dumarchez, J.; Vannucci, F.; Ammosov, V. V.; Koreshev, V.; Semak, A.; Zaets, V. G.; Dore, U.; Orestano, D.; Pastore, F.; Tonazzo, A.; Tortora, L.; Booth, C. N.; Buttar, C. M.; Hodgson, P.; Howlett, L.; Bogomilov, M.; Chizhov, M. V.; Kolev, D.; Tsenov, R.; Piperov, S.; Temnikov, P.; Apollonio, M.; Chimenti, P.; Giannini, G.; Santin, G.; Hayato, Y.; Ichikawa, A. K.; Kobayashi, T.; Burguet–Castell, J.; Gómez-Cadenas, J.J.; Novella, P.; Sorel, M.; Tornero, Ángel Pardo

doi:10.1016/j.nima.2006.11.071

Cited by 15 publications

(11 citation statements)

References 16 publications

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“…The forward spectrometer-based on five modules of large area drift chambers (NDC1-5) [23] and a dipole magnet complemented by a set of detectors for particle identification (PID): a time-of-flight wall (TOFW) [24], a large Cherenkov detector (CHE), and an electromagnetic calorimeter (ECAL)-covers polar angles up to 250 mrad, which is well matched to the angular range of interest for the measurement of hadron production to calculate the properties of conventional neutrino beams. The discrimination power of TOFW below 3 GeV/c and the Cherenkov detector above 3 GeV/c are combined to provide powerful separation of forward pions and protons [25]. The calorimeter is used only for separating pions and electrons when characterizing the response of the other detectors.…”

Section: A Experimental Apparatusmentioning

confidence: 99%

Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton

Apollonio¹,

Artamonov²,

Bagulya³

et al. 2010

Phys. Rev. C

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Measurements of the double-differential proton production cross-section d 2 σ /dpd in the range of momentum 0.5 GeV/c p < 8.0 GeV/c and angle 0.05 rad θ < 0.25 rad in collisions of charged pions and protons on beryllium, carbon, aluminium, copper, tin, tantalum, and lead are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors and impinged on a target of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP experiment. Results are obtained for the double-differential cross-sections mainly at four incident beam momenta (3,5,8, and 12 GeV/c). Measurements are compared with predictions of the GEANT4 and MARS Monte Carlo generators.

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Section: A Experimental Apparatusmentioning

confidence: 99%

Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton

Apollonio¹,

Artamonov²,

Bagulya³

et al. 2010

Phys. Rev. C

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“…The method to combine the information from these PID detectors is described in Ref. [23]. In the kinematic range of the current analysis, the pion identification efficiency is about 98%, while the background from misidentified protons is well below 1%.…”

Section: Discussionmentioning

confidence: 99%

Forward production of charged pions with incident protons on nuclear targets at the CERN Proton Synchrotron

et al. 2009

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Measurements of the double-differential π ± production cross section in the range of momentum 0.5 p 8.0 GeV/c and angle 0.025 θ 0.25 rad in collisions of protons on beryllium, carbon, nitrogen, oxygen, aluminum, copper, tin, tantalum, and lead are presented. The data were taken with the large-acceptance HAdRon Production (HARP) detector in the T9 beamline of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors. Thin targets of 5% of a nuclear interaction length were used. The tracking and identification of the produced particles were performed using the forward system of the HARP experiment. Results are obtained for the double-differential cross sections d 2 σ /dp d mainly at four incident proton beam momenta (3,5,8, and 12 GeV/c). Measurements are compared with the GEANT4 and MARS Monte Carlo generators. A global parametrization is provided as an approximation of all the collected datasets, which can serve as a tool for quick yield estimates.

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“…The analytical calculation of these matrix elements is described in detail in [61]. Briefly, the four matrix elements can be expressed as an integral over the possible ranges of β and N pe for values of the PID estimator above the cut value, P cut ,…”

Section: −1 α·αmentioning

confidence: 99%

“…4.11. These limits are slightly complicated by the existence of the β-outliers introduced in Section 3.4.4, and we will refer the reader to [61] for the final expressions.…”

Section: −1 α·αmentioning

confidence: 99%

A measurement of hadron production cross sections for the simulation of accelerator neutrino beams and a search for muon-neutrino to electron-neutrino oscillations in the Δm<sup>2</sup> about equals 1-eV<sup>2</sup> region

Schmitz

2008

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First, charged pion and proton production is measured at the HARP experiment for two experimental configurations relevant to two contemporary accelerator-based neutrino beams. Double-differential cross-sections for π + , π − and proton production are presented for proton+beryllium collisions at 8.9 GeV/c and proton+aluminum collisions at 12.9 GeV/c. These data have been used in the predictions of neutrino fluxes by the K2K experiment in Japan and the MiniBooNE and SciBooNE experiments at Fermilab.Second, a search for evidence of muon neutrino to electron neutrino oscillations at MiniBooNE is presented. MiniBooNE was designed to search for evidence of ν µ → ν e oscillations consistent with a mass-squared splitting near 1 eV 2 . Evidence of such an oscillation was reported by the LSND collaboration in the 1990s but has not been confirmed by other experiments. A method which combines the electron neutrino candidate sample with the high statistics muon neutrino candidate sample to define a single χ 2 statistic is developed. A complete description of experimental uncertainties is contained within a correlated error matrix which includes correlations between the two samples. This correlation reduces the uncertainty on the prediction of the smaller statistics electron sample and improves MiniBooNE's sensitivity to oscillations. Analysis of the MiniBooNE electron candidate data reveals no evidence of direct ν µ → ν e oscillations consistent with this interpretation of the LSND data.

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Particle identification algorithms for the HARP forward spectrometer

Cited by 15 publications

References 16 publications

Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton

Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton

Forward production of charged pions with incident protons on nuclear targets at the CERN Proton Synchrotron

A measurement of hadron production cross sections for the simulation of accelerator neutrino beams and a search for muon-neutrino to electron-neutrino oscillations in the Δm<sup>2</sup> about equals 1-eV<sup>2</sup> region

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