Detector for measuring the π+ → e+v branching fraction

Aguilar-Arevalo, A. A.; Aoki, M.; Blecher, M.; Bruch, D. vom; Bryman, D.; Comfort, J.; Cuen-Rochin, S.; Doria, L.; Gumplinger, P.; Hussein, A.; Igarashi, Y.; Ito, N.; Ito, S.; Kettell, S. H.; Kurchaninov, L.; Littenberg, L.; Malbrunot, C.; Mischke, R. E.; Muroi, A.; Numao, T.; Sheffer, G.; Sher, A.; Sullivan, T.; Tauchi, K.; Vavilov, D.; Yamada, K.; Yoshida, M.

doi:10.1016/j.nima.2015.04.004

Title: Detector for measuring the π⁺ → e⁺v branching fraction

Abstract

The PIENU experiment at TRIUMF is aimed at a measurement of the branching ratio R^e/u = Γ((π⁺ → e⁺v_e) + (π⁺ → e⁺v_eγ))/Γ((π⁺ → μ⁺v_μ) + (π⁺ → μ⁺v_μγ)) with precision < 0.1%. Incident pions, delivered at the rate of 60 kHz with momentum 75 MeV/c, were degraded and stopped in a plastic scintillator target. Pions and their decay product positrons were detected with plastic scintillators and tracked with multiwire proportional chambers and silicon strip detectors. The energies of the positrons were measured in a spectrometer consisting of a large NaI(Tℓ) crystal surrounded by an array of pure CsI crystals. This paper provides a description of the PIENU experimental apparatus and its performance in pursuit of R^e/u

Authors:

Aguilar-Arevalo, A. A. ^[1]; Aoki, M. ^[2]; Blecher, M. ^[3]; Bruch, D. vom ^[4]; Bryman, D. ^[4]; Comfort, J. ^[5]; Cuen-Rochin, S. ^[4]; Doria, L. ^[6]; Gumplinger, P. ^[6]; Hussein, A. ^[7]; Igarashi, Y. ^[8]; Ito, N. ^[2]; Ito, S. ^[2]; Kettell, S. H. ^[9]; Kurchaninov, L. ^[6]; Littenberg, L. ^[9]; Malbrunot, C. ^[4]; Mischke, R. E. ^[6]; Muroi, A. ^[2]; Numao, T. ^[6] more »

Universidad Nacional Autonoma de Mexico (Mexico). Inst. de Ciencias Nucleares
Osaka Univ. (Japan). Graduate School of Science
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy
Arizona State Univ., Tempe, AZ (United States)
TRIUMF, Vancouver, BC (Canada)
Univ. of Northern British Columbia, Prince George, BC (Canada)
National Lab. for High Energy Physics (KEK), Tsukuba (Japan)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Mon Apr 13 00:00:00 EDT 2015

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1210167

Report Number(s):: BNL-108201-2015-JA
Journal ID: ISSN 0168-9002; R&D Project: PO-022; KA2201020; TRN: US1600721

Grant/Contract Number:: 18540274; 21340059; 24224006

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Additional Journal Information:: Journal Volume: 791; Journal Issue: C; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CSI; scintillation detectors; pion decay

Citation Formats


                    Aguilar-Arevalo, A. A., Aoki, M., Blecher, M., Bruch, D. vom, Bryman, D., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, N., Ito, S., Kettell, S. H., Kurchaninov, L., Littenberg, L., Malbrunot, C., Mischke, R. E., Muroi, A., Numao, T., Sheffer, G., Sher, A., Sullivan, T., Tauchi, K., Vavilov, D., Yamada, K., and Yoshida, M. Detector for measuring the π+ → e+v branching fraction.  United States: N. p., 2015. 
Web.  doi:10.1016/j.nima.2015.04.004.

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                    Aguilar-Arevalo, A. A., Aoki, M., Blecher, M., Bruch, D. vom, Bryman, D., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, N., Ito, S., Kettell, S. H., Kurchaninov, L., Littenberg, L., Malbrunot, C., Mischke, R. E., Muroi, A., Numao, T., Sheffer, G., Sher, A., Sullivan, T., Tauchi, K., Vavilov, D., Yamada, K., & Yoshida, M. Detector for measuring the π+ → e+v branching fraction.  United States.  https://doi.org/10.1016/j.nima.2015.04.004

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                    Aguilar-Arevalo, A. A., Aoki, M., Blecher, M., Bruch, D. vom, Bryman, D., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, N., Ito, S., Kettell, S. H., Kurchaninov, L., Littenberg, L., Malbrunot, C., Mischke, R. E., Muroi, A., Numao, T., Sheffer, G., Sher, A., Sullivan, T., Tauchi, K., Vavilov, D., Yamada, K., and Yoshida, M. Mon .  
"Detector for measuring the π+ → e+v branching fraction".  United States.  https://doi.org/10.1016/j.nima.2015.04.004.  https://www.osti.gov/servlets/purl/1210167.

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@article{osti_1210167,

  title        = {Detector for measuring the π+ → e+v branching fraction},

  author       = {Aguilar-Arevalo, A. A. and Aoki, M. and Blecher, M. and Bruch, D. vom and Bryman, D. and Comfort, J. and Cuen-Rochin, S. and Doria, L. and Gumplinger, P. and Hussein, A. and Igarashi, Y. and Ito, N. and Ito, S. and Kettell, S. H. and Kurchaninov, L. and Littenberg, L. and Malbrunot, C. and Mischke, R. E. and Muroi, A. and Numao, T. and Sheffer, G. and Sher, A. and Sullivan, T. and Tauchi, K. and Vavilov, D. and Yamada, K. and Yoshida, M.},

  abstractNote = {The PIENU experiment at TRIUMF is aimed at a measurement of the branching ratio Re/u = Γ((π+ → e+ve) + (π+ → e+veγ))/Γ((π+ → μ+vμ) + (π+ → μ+vμγ)) with precision < 0.1%. Incident pions, delivered at the rate of 60 kHz with momentum 75 MeV/c, were degraded and stopped in a plastic scintillator target. Pions and their decay product positrons were detected with plastic scintillators and tracked with multiwire proportional chambers and silicon strip detectors. The energies of the positrons were measured in a spectrometer consisting of a large NaI(Tℓ) crystal surrounded by an array of pure CsI crystals. This paper provides a description of the PIENU experimental apparatus and its performance in pursuit of Re/u},

  doi          = {10.1016/j.nima.2015.04.004},

  journal      = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},

  number       = C,

  volume       = 791,

  place        = {United States},

  year         = {Mon Apr 13 00:00:00 EDT 2015},

  month        = {Mon Apr 13 00:00:00 EDT 2015}

}

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Works referenced in this record:

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Aguilar-Arevalo, A.; Blecher, M.; Bryman, D. A.
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π/ K → e ν̄ _e branching ratios to O ( e ² p ⁴ ) in Chiral Perturbation Theory
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Cirigliano, Vincenzo; Rosell, Ignasi
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Performance of fine-mesh photomultiplier tubes designed for an undoped-CsI endcap photon detector
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Rare Kaon and Pion Decays: Incisive Probes for New Physics Beyond the Standard Model
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Bryman, Douglas; Marciano, William J.; Tschirhart, Robert
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Works referencing / citing this record:

Improved search for heavy neutrinos in the decay $π \to e ν$
journal, April 2018

Aguilar-Arevalo, A.; Aoki, M.; Blecher, M.
Physical Review D, Vol. 97, Issue 7
DOI: 10.1103/physrevd.97.072012

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Title: Detector for measuring the π+ → e+v branching fraction

Abstract

Citation Formats

High purity pion beam at TRIUMF journal, October 2009

Branching ratio for the rare pion decay into positron and neutrino journal, January 1993

CsI endcap photon detector for a K/sup +/→π/sup +/ν/spl nu journal, January 1995

Study of a large NaI(Tl) crystal journal, September 2010

π/ K → e ν̄ e branching ratios to O ( e 2 p 4 ) in Chiral Perturbation Theory journal, October 2007

Performance of fine-mesh photomultiplier tubes designed for an undoped-CsI endcap photon detector journal, February 1998

Measurement of the K + → π + ν ν ¯ branching ratio journal, March 2008

YAlO3: Ce-Am light pulsers as a gain monitor for undoped CsI detectors in a magnetic field journal, January 1994

The barrel modules of the ATLAS semiconductor tracker journal, December 2006

Rare Kaon and Pion Decays: Incisive Probes for New Physics Beyond the Standard Model journal, November 2011

Search for massive neutrinos in the decay π → e ν journal, September 2011

N → Δ Transition from Simultaneous Measurements of p ( γ → , π ) and p ( γ → , γ ) journal, December 1997

Measurement of the π + → e + ν branching ratio journal, May 1992

Monte Carlo modeling of scintillator crystal performance for stratified PET detectors with DETECT2000 journal, June 2002

A 48 channel pulse shape digitizer with DSP journal, June 2006

Pion Decay-Mode Tagging in a Plastic Scintillator Using COPPER 500-MHz FADC journal, August 2007

Radiative corrections to π l 2 decays journal, November 1993

Measurement of the π + → e + ν branching ratio journal, January 1994

A common data acquisition system for high-intensity beam experiments journal, December 2005

Improved search for heavy neutrinos in the decay π → e ν journal, April 2018

Title: Detector for measuring the π⁺ → e⁺v branching fraction

High purity pion beam at TRIUMF
journal, October 2009

Branching ratio for the rare pion decay into positron and neutrino
journal, January 1993

CsI endcap photon detector for a K/sup +/→π/sup +/ν/spl nu
journal, January 1995

Study of a large NaI(Tl) crystal
journal, September 2010

π/ K → e ν̄ _e branching ratios to O ( e ² p ⁴ ) in Chiral Perturbation Theory
journal, October 2007

Performance of fine-mesh photomultiplier tubes designed for an undoped-CsI endcap photon detector
journal, February 1998

Measurement of the $K^{+} \to π^{+} ν \bar{ν}$ branching ratio
journal, March 2008

YAlO3: Ce-Am light pulsers as a gain monitor for undoped CsI detectors in a magnetic field
journal, January 1994

The barrel modules of the ATLAS semiconductor tracker
journal, December 2006

Rare Kaon and Pion Decays: Incisive Probes for New Physics Beyond the Standard Model
journal, November 2011

Search for massive neutrinos in the decay $π \to e ν$
journal, September 2011

$N \to Δ$ Transition from Simultaneous Measurements of $p (\vec{γ}, π)$ and $p (\vec{γ}, γ)$
journal, December 1997

Measurement of the $π^{+}$ → $e^{+}$ ν branching ratio
journal, May 1992

Monte Carlo modeling of scintillator crystal performance for stratified PET detectors with DETECT2000
journal, June 2002

A 48 channel pulse shape digitizer with DSP
journal, June 2006

Pion Decay-Mode Tagging in a Plastic Scintillator Using COPPER 500-MHz FADC
journal, August 2007

Radiative corrections to $π_{l 2}$ decays
journal, November 1993

Measurement of the $π^{+} \to e^{+} ν$ branching ratio
journal, January 1994

A common data acquisition system for high-intensity beam experiments
journal, December 2005

Improved search for heavy neutrinos in the decay $π \to e ν$
journal, April 2018