Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations

M. Andreotti; S. Bagnasco; W. Baldini; D. Bettoni; G. Borreani; A. Buzzo; R. Calabrese; R. Cester; G. Cibinetto; P. Dalpiaz; G. Garzoglio; K. E. Gollwitzer; M. Graham; M. Hu; D. Joffe; J. Kasper; G. Lasio; M. Lo Vetere; E. Luppi; M. Macrì; M. Mandelkern; F. Marchetto; M. Marinelli; E. Menichetti; Z. Metreveli; R. Mussa; M. Negrini; M. M. Obertino; M. Pallavicini; N. Pastrone; C. Patrignani; S. Pordes; E. Robutti; W. Roethel; J. Rosen; P. Rumerio; R. W. Rusack; A. Santroni; J. Schultz; S. H. Seo; K. K. Seth; G. Stancari; M. Stancari; A. Tomaradze; I. Uman; T. Vidnovic; S. Werkema; P. Zweber

doi:10.1016/j.physletb.2007.08.044

Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations

M. Andreotti, S. Bagnasco, W. Baldini, D. Bettoni, G. Borreani, A. Buzzo, R. Calabrese, R. Cester, G. Cibinetto, P. Dalpiaz, G. Garzoglio, K. E. Gollwitzer, M. Graham, M. Hu, D. Joffe, J. Kasper, G. Lasio, M. Lo Vetere, E. Luppi, M. MacrìM. Mandelkern, F. Marchetto, M. Marinelli, E. Menichetti, Z. Metreveli, R. Mussa, M. Negrini, M. M. Obertino, M. Pallavicini, N. Pastrone, C. Patrignani, S. Pordes, E. Robutti, W. Roethel, J. Rosen, P. Rumerio, R. W. Rusack, A. Santroni, J. Schultz, S. H. Seo, K. K. Seth, G. Stancari, M. Stancari, A. Tomaradze, I. Uman, T. Vidnovic, S. Werkema, P. Zweber

Physics and Astronomy (Twin Cities)

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Abstract

We present new precision measurements of the ψ (2 S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the Antiproton Accumulator in the year 2000. A new technique of complementary scans was developed to study narrow resonances with stochastically cooled antiproton beams. The technique relies on precise revolution-frequency and orbit-length measurements, while making the analysis of the excitation curve almost independent of machine lattice parameters. We study the ψ (2 S) meson through the processes over(p, ̄) p → e⁺ e^- and over(p, ̄) p → J / ψ + X → e⁺ e^- + X. We measure the width to be Γ = 290 ± 25 (sta) ± 4 (sys) keV and the combination of partial widths Γ_{e+ e-} Γ_{over(p, ̄) p} / Γ = 579 ± 38 (sta) ± 36 (sys) meV, which represent the most precise measurements to date.

Original language	English (US)
Pages (from-to)	74-79
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	654
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physletb.2007.08.044
State	Published - Oct 11 2007

Bibliographical note

Funding Information:
We gratefully acknowledge the support of the Fermilab staff and technicians and especially the Antiproton Source Department of the Accelerator Division and the On-line Department of the Computing Division. We also wish to thank the INFN and University technicians and engineers from Ferrara, Genoa, Turin and Northwestern for their valuable work. This research was supported by the Italian Istituto Nazionale di Fisica Nucleare (INFN) and the US Department of Energy.

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Andreotti, M., Bagnasco, S., Baldini, W., Bettoni, D., Borreani, G., Buzzo, A., Calabrese, R., Cester, R., Cibinetto, G., Dalpiaz, P., Garzoglio, G., Gollwitzer, K. E., Graham, M., Hu, M., Joffe, D., Kasper, J., Lasio, G., Lo Vetere, M., Luppi, E., ... Zweber, P. (2007). Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 654(3-4), 74-79. https://doi.org/10.1016/j.physletb.2007.08.044

Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations. / Andreotti, M.; Bagnasco, S.; Baldini, W. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 654, No. 3-4, 11.10.2007, p. 74-79.

Research output: Contribution to journal › Article › peer-review

Andreotti, M, Bagnasco, S, Baldini, W, Bettoni, D, Borreani, G, Buzzo, A, Calabrese, R, Cester, R, Cibinetto, G, Dalpiaz, P, Garzoglio, G, Gollwitzer, KE, Graham, M, Hu, M, Joffe, D, Kasper, J, Lasio, G, Lo Vetere, M, Luppi, E, Macrì, M, Mandelkern, M, Marchetto, F, Marinelli, M, Menichetti, E, Metreveli, Z, Mussa, R, Negrini, M, Obertino, MM, Pallavicini, M, Pastrone, N, Patrignani, C, Pordes, S, Robutti, E, Roethel, W, Rosen, J, Rumerio, P, Rusack, RW, Santroni, A, Schultz, J, Seo, SH, Seth, KK, Stancari, G, Stancari, M, Tomaradze, A, Uman, I, Vidnovic, T, Werkema, S & Zweber, P 2007, 'Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 654, no. 3-4, pp. 74-79. https://doi.org/10.1016/j.physletb.2007.08.044

Andreotti M, Bagnasco S, Baldini W, Bettoni D, Borreani G, Buzzo A et al. Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2007 Oct 11;654(3-4):74-79. doi: 10.1016/j.physletb.2007.08.044

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title = "Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p,{\= }) p annihilations",

abstract = "We present new precision measurements of the ψ (2 S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the Antiproton Accumulator in the year 2000. A new technique of complementary scans was developed to study narrow resonances with stochastically cooled antiproton beams. The technique relies on precise revolution-frequency and orbit-length measurements, while making the analysis of the excitation curve almost independent of machine lattice parameters. We study the ψ (2 S) meson through the processes over(p,{\= }) p → e+ e- and over(p,{\= }) p → J / ψ + X → e+ e- + X. We measure the width to be Γ = 290 ± 25 (sta) ± 4 (sys) keV and the combination of partial widths Γe+ e- Γover(p,{\= }) p / Γ = 579 ± 38 (sta) ± 36 (sys) meV, which represent the most precise measurements to date.",

author = "M. Andreotti and S. Bagnasco and W. Baldini and D. Bettoni and G. Borreani and A. Buzzo and R. Calabrese and R. Cester and G. Cibinetto and P. Dalpiaz and G. Garzoglio and Gollwitzer, {K. E.} and M. Graham and M. Hu and D. Joffe and J. Kasper and G. Lasio and {Lo Vetere}, M. and E. Luppi and M. Macr{\`i} and M. Mandelkern and F. Marchetto and M. Marinelli and E. Menichetti and Z. Metreveli and R. Mussa and M. Negrini and Obertino, {M. M.} and M. Pallavicini and N. Pastrone and C. Patrignani and S. Pordes and E. Robutti and W. Roethel and J. Rosen and P. Rumerio and Rusack, {R. W.} and A. Santroni and J. Schultz and Seo, {S. H.} and Seth, {K. K.} and G. Stancari and M. Stancari and A. Tomaradze and I. Uman and T. Vidnovic and S. Werkema and P. Zweber",

note = "Funding Information: We gratefully acknowledge the support of the Fermilab staff and technicians and especially the Antiproton Source Department of the Accelerator Division and the On-line Department of the Computing Division. We also wish to thank the INFN and University technicians and engineers from Ferrara, Genoa, Turin and Northwestern for their valuable work. This research was supported by the Italian Istituto Nazionale di Fisica Nucleare (INFN) and the US Department of Energy. ",

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doi = "10.1016/j.physletb.2007.08.044",

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T1 - Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations

AU - Andreotti, M.

AU - Bagnasco, S.

AU - Baldini, W.

AU - Bettoni, D.

AU - Borreani, G.

AU - Buzzo, A.

AU - Calabrese, R.

AU - Cester, R.

AU - Cibinetto, G.

AU - Dalpiaz, P.

AU - Garzoglio, G.

AU - Gollwitzer, K. E.

AU - Graham, M.

AU - Hu, M.

AU - Joffe, D.

AU - Kasper, J.

AU - Lasio, G.

AU - Lo Vetere, M.

AU - Luppi, E.

AU - Macrì, M.

AU - Mandelkern, M.

AU - Marchetto, F.

AU - Marinelli, M.

AU - Menichetti, E.

AU - Metreveli, Z.

AU - Mussa, R.

AU - Negrini, M.

AU - Obertino, M. M.

AU - Pallavicini, M.

AU - Pastrone, N.

AU - Patrignani, C.

AU - Pordes, S.

AU - Robutti, E.

AU - Roethel, W.

AU - Rosen, J.

AU - Rumerio, P.

AU - Rusack, R. W.

AU - Santroni, A.

AU - Schultz, J.

AU - Seo, S. H.

AU - Seth, K. K.

AU - Stancari, G.

AU - Stancari, M.

AU - Tomaradze, A.

AU - Uman, I.

AU - Vidnovic, T.

AU - Werkema, S.

AU - Zweber, P.

N1 - Funding Information: We gratefully acknowledge the support of the Fermilab staff and technicians and especially the Antiproton Source Department of the Accelerator Division and the On-line Department of the Computing Division. We also wish to thank the INFN and University technicians and engineers from Ferrara, Genoa, Turin and Northwestern for their valuable work. This research was supported by the Italian Istituto Nazionale di Fisica Nucleare (INFN) and the US Department of Energy.

PY - 2007/10/11

Y1 - 2007/10/11

N2 - We present new precision measurements of the ψ (2 S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the Antiproton Accumulator in the year 2000. A new technique of complementary scans was developed to study narrow resonances with stochastically cooled antiproton beams. The technique relies on precise revolution-frequency and orbit-length measurements, while making the analysis of the excitation curve almost independent of machine lattice parameters. We study the ψ (2 S) meson through the processes over(p, ̄) p → e+ e- and over(p, ̄) p → J / ψ + X → e+ e- + X. We measure the width to be Γ = 290 ± 25 (sta) ± 4 (sys) keV and the combination of partial widths Γe+ e- Γover(p, ̄) p / Γ = 579 ± 38 (sta) ± 36 (sys) meV, which represent the most precise measurements to date.

AB - We present new precision measurements of the ψ (2 S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the Antiproton Accumulator in the year 2000. A new technique of complementary scans was developed to study narrow resonances with stochastically cooled antiproton beams. The technique relies on precise revolution-frequency and orbit-length measurements, while making the analysis of the excitation curve almost independent of machine lattice parameters. We study the ψ (2 S) meson through the processes over(p, ̄) p → e+ e- and over(p, ̄) p → J / ψ + X → e+ e- + X. We measure the width to be Γ = 290 ± 25 (sta) ± 4 (sys) keV and the combination of partial widths Γe+ e- Γover(p, ̄) p / Γ = 579 ± 38 (sta) ± 36 (sys) meV, which represent the most precise measurements to date.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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ER -

Precision measurements of the total and partial widths of the ψ (2 S) charmonium meson with a new complementary-scan technique in over(p, ̄) p annihilations

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