Measurement of the resonance parameters of the charmonium ground state, ηc(11 S0)

M. Ambrogiani; M. Andreotti; S. Argirò; S. Bagnasco; W. Baldini; D. Bettoni; G. Borreani; A. Buzzo; R. Calabrese; R. Cester; G. Cibinetto; P. Dalpiaz; X. Fan; G. Garzoglio; K. E. Gollwitzer; M. Graham; A. Hahn; S. Jin; D. Joffe; J. Kasper; G. Lasio; M. Lo Vetere; E. Luppi; P. Maas; M. Macrí; M. Mandelkern; F. Marchetto; M. Marinelli; W. Marsh; M. Martini; E. Menichetti; Z. Metreveli; R. Mussa; M. Negrini; M. M. Obertino; M. Pallavicini; N. Pastrone; C. Patrignani; T. K. Pedlar; J. Peoples; S. Pordes; E. Robutti; W. Roethel; J. Rosen; P. Rumerio; R. Rusack; A. Santroni; M. Savriè; J. Schultz; S. H. Seo; K. K. Seth; G. Stancari; M. Stancari; J. Streets; A. Tomaradze; I. Uman; T. Vidnovic; S. Werkema; G. Zioulas

doi:10.1016/S0370-2693(03)00805-0

Measurement of the resonance parameters of the charmonium ground state, η_c(1¹ S₀)

M. Ambrogiani, M. Andreotti, S. Argirò, S. Bagnasco, W. Baldini, D. Bettoni, G. Borreani, A. Buzzo, R. Calabrese, R. Cester, G. Cibinetto, P. Dalpiaz, X. Fan, G. Garzoglio, K. E. Gollwitzer, M. Graham, A. Hahn, S. Jin, D. Joffe, J. KasperG. Lasio, M. Lo Vetere, E. Luppi, P. Maas, M. Macrí, M. Mandelkern, F. Marchetto, M. Marinelli, W. Marsh, M. Martini, E. Menichetti, Z. Metreveli, R. Mussa, M. Negrini, M. M. Obertino, M. Pallavicini, N. Pastrone, C. Patrignani, T. K. Pedlar, J. Peoples, S. Pordes, E. Robutti, W. Roethel, J. Rosen, P. Rumerio, R. Rusack, A. Santroni, M. Savriè, J. Schultz, S. H. Seo, K. K. Seth^*, G. Stancari, M. Stancari, J. Streets, A. Tomaradze, I. Uman, T. Vidnovic, S. Werkema, G. Zioulas

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Physics and Astronomy

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Abstract

The resonance parameters of the charmonium ground state, η_c(1¹S₀), have been measured by means of the reaction p̄p→η_c→γγ. The mass and total width are determined to be 2984.1 ± 2.1 ± 1.0 MeV/c² and 20.4_-6.7^+7.7 ± 2.0 MeV, respectively. The product of branching ratios B(p̄p→η_c)B(η_c→γγ) is determined to be (22.4_-3.7^+3.8 ± 2.0) × 10^-8, from which B(η_c→γγ)=(1.87_-0.31-0.50 ^+0.32+0.95) × 10^-4, and Γ(η_c→γγ)=3.8_-1.0-1.0 ^+1.1+1.9 keV are derived using B(η_c→p̄p)= (12 ± 4) × 10^-4 from the literature.

Original language	English (US)
Pages (from-to)	45-50
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	566
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(03)00805-0
State	Published - Jul 24 2003

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(03)00805-0

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Ambrogiani, M., Andreotti, M., Argirò, S., Bagnasco, S., Baldini, W., Bettoni, D., Borreani, G., Buzzo, A., Calabrese, R., Cester, R., Cibinetto, G., Dalpiaz, P., Fan, X., Garzoglio, G., Gollwitzer, K. E., Graham, M., Hahn, A., Jin, S., Joffe, D., ... Zioulas, G. (2003). Measurement of the resonance parameters of the charmonium ground state, η_c(1¹ S₀). Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 566(1-2), 45-50. https://doi.org/10.1016/S0370-2693(03)00805-0

@article{4dd88bca2de34d1db11e415be367518a,

title = "Measurement of the resonance parameters of the charmonium ground state, ηc(11 S0)",

abstract = "The resonance parameters of the charmonium ground state, ηc(11S0), have been measured by means of the reaction {\=p}p→ηc→γγ. The mass and total width are determined to be 2984.1 ± 2.1 ± 1.0 MeV/c2 and 20.4-6.7+7.7 ± 2.0 MeV, respectively. The product of branching ratios B({\=p}p→ηc)B(ηc→γγ) is determined to be (22.4-3.7+3.8 ± 2.0) × 10-8, from which B(ηc→γγ)=(1.87-0.31-0.50 +0.32+0.95) × 10-4, and Γ(ηc→γγ)=3.8-1.0-1.0 +1.1+1.9 keV are derived using B(ηc→{\=p}p)= (12 ± 4) × 10-4 from the literature.",

author = "M. Ambrogiani and M. Andreotti and S. Argir{\`o} 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 X. Fan and G. Garzoglio and Gollwitzer, {K. E.} and M. Graham and A. Hahn and S. Jin and D. Joffe and J. Kasper and G. Lasio and {Lo Vetere}, M. and E. Luppi and P. Maas and M. Macr{\'i} and M. Mandelkern and F. Marchetto and M. Marinelli and W. Marsh and M. Martini 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 Pedlar, {T. K.} and J. Peoples and S. Pordes and E. Robutti and W. Roethel and J. Rosen and P. Rumerio and R. Rusack and A. Santroni and M. Savri{\`e} and J. Schultz and Seo, {S. H.} and Seth, {K. K.} and G. Stancari and M. Stancari and J. Streets and A. Tomaradze and I. Uman and T. Vidnovic and S. Werkema and G. Zioulas",

note = "Funding Information: The authors gratefully acknowledge the technical support provided by Fermilab, in particular by the Antiproton Source Department of the Beams Division and the On-line Support Department of the Computing Division. We also wish to thank the staff, engineers, and technicians at their respective institutions for their help and cooperation. This research was sponsored by the US Department of Energy and the Italian Istituto Nazionale di Fisica Nucleare. ",

year = "2003",

month = jul,

day = "24",

doi = "10.1016/S0370-2693(03)00805-0",

language = "English (US)",

volume = "566",

pages = "45--50",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Ambrogiani, M, Andreotti, M, Argirò, S, Bagnasco, S, Baldini, W, Bettoni, D, Borreani, G, Buzzo, A, Calabrese, R, Cester, R, Cibinetto, G, Dalpiaz, P, Fan, X, Garzoglio, G, Gollwitzer, KE, Graham, M, Hahn, A, Jin, S, Joffe, D, Kasper, J, Lasio, G, Lo Vetere, M, Luppi, E, Maas, P, Macrí, M, Mandelkern, M, Marchetto, F, Marinelli, M, Marsh, W, Martini, M, Menichetti, E, Metreveli, Z, Mussa, R, Negrini, M, Obertino, MM, Pallavicini, M, Pastrone, N, Patrignani, C, Pedlar, TK, Peoples, J, Pordes, S, Robutti, E, Roethel, W, Rosen, J, Rumerio, P, Rusack, R, Santroni, A, Savriè, M, Schultz, J, Seo, SH, Seth, KK, Stancari, G, Stancari, M, Streets, J, Tomaradze, A, Uman, I, Vidnovic, T, Werkema, S & Zioulas, G 2003, 'Measurement of the resonance parameters of the charmonium ground state, η_c(1¹ S₀)', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 566, no. 1-2, pp. 45-50. https://doi.org/10.1016/S0370-2693(03)00805-0

TY - JOUR

T1 - Measurement of the resonance parameters of the charmonium ground state, ηc(11 S0)

AU - Ambrogiani, M.

AU - Andreotti, M.

AU - Argirò, S.

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 - Fan, X.

AU - Garzoglio, G.

AU - Gollwitzer, K. E.

AU - Graham, M.

AU - Hahn, A.

AU - Jin, S.

AU - Joffe, D.

AU - Kasper, J.

AU - Lasio, G.

AU - Lo Vetere, M.

AU - Luppi, E.

AU - Maas, P.

AU - Macrí, M.

AU - Mandelkern, M.

AU - Marchetto, F.

AU - Marinelli, M.

AU - Marsh, W.

AU - Martini, 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 - Pedlar, T. K.

AU - Peoples, J.

AU - Pordes, S.

AU - Robutti, E.

AU - Roethel, W.

AU - Rosen, J.

AU - Rumerio, P.

AU - Rusack, R.

AU - Santroni, A.

AU - Savriè, M.

AU - Schultz, J.

AU - Seo, S. H.

AU - Seth, K. K.

AU - Stancari, G.

AU - Stancari, M.

AU - Streets, J.

AU - Tomaradze, A.

AU - Uman, I.

AU - Vidnovic, T.

AU - Werkema, S.

AU - Zioulas, G.

N1 - Funding Information: The authors gratefully acknowledge the technical support provided by Fermilab, in particular by the Antiproton Source Department of the Beams Division and the On-line Support Department of the Computing Division. We also wish to thank the staff, engineers, and technicians at their respective institutions for their help and cooperation. This research was sponsored by the US Department of Energy and the Italian Istituto Nazionale di Fisica Nucleare.

PY - 2003/7/24

Y1 - 2003/7/24

N2 - The resonance parameters of the charmonium ground state, ηc(11S0), have been measured by means of the reaction p̄p→ηc→γγ. The mass and total width are determined to be 2984.1 ± 2.1 ± 1.0 MeV/c2 and 20.4-6.7+7.7 ± 2.0 MeV, respectively. The product of branching ratios B(p̄p→ηc)B(ηc→γγ) is determined to be (22.4-3.7+3.8 ± 2.0) × 10-8, from which B(ηc→γγ)=(1.87-0.31-0.50 +0.32+0.95) × 10-4, and Γ(ηc→γγ)=3.8-1.0-1.0 +1.1+1.9 keV are derived using B(ηc→p̄p)= (12 ± 4) × 10-4 from the literature.

AB - The resonance parameters of the charmonium ground state, ηc(11S0), have been measured by means of the reaction p̄p→ηc→γγ. The mass and total width are determined to be 2984.1 ± 2.1 ± 1.0 MeV/c2 and 20.4-6.7+7.7 ± 2.0 MeV, respectively. The product of branching ratios B(p̄p→ηc)B(ηc→γγ) is determined to be (22.4-3.7+3.8 ± 2.0) × 10-8, from which B(ηc→γγ)=(1.87-0.31-0.50 +0.32+0.95) × 10-4, and Γ(ηc→γγ)=3.8-1.0-1.0 +1.1+1.9 keV are derived using B(ηc→p̄p)= (12 ± 4) × 10-4 from the literature.

UR - http://www.scopus.com/inward/record.url?scp=0037819314&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037819314&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(03)00805-0

DO - 10.1016/S0370-2693(03)00805-0

M3 - Article

AN - SCOPUS:0037819314

SN - 0370-2693

VL - 566

SP - 45

EP - 50

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

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

IS - 1-2

ER -

Measurement of the resonance parameters of the charmonium ground state, η_c(1¹ S₀)

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