Measurement of the two photon decay of the χc0(1 3P0) state of charmonium

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; T. K. Pedlar; S. Pordes; E. Robutti; W. Roethel; J. L. Rosen; P. Rumerio; R. 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.2004.01.024

Measurement of the two photon decay of the χ_c0(1 ³P₀) state of charmonium

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, T. K. Pedlar, S. Pordes, E. Robutti, W. Roethel, J. L. Rosen, P. Rumerio, R. 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 report on the decay to two photons of the χ_c0(1 ³P₀) charmonium resonance formed in p̄p interactions at Fermilab experiment E835. We have measured the product of branching ratios BR(χ_c0→p̄p) x BR(χ_c0→γγ)=(6.52±1.18(stat)_-0.72 ^+0.48(sys))×10^-8. Using values from the 2002 PDG, this measurement leads to the partial width Γ(χ_c0→γγ)=2.9±0.9 keV.

Original language	English (US)
Pages (from-to)	16-21
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	584
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2004.01.024
State	Published - Mar 25 2004

Bibliographical note

Funding Information:
We are grateful for the technical support provided by Fermilab, in particular the Beams Division's Antiproton Source Department, and by the staffs of our institutions. This research is supported by the US Department of Energy and the Italian Istituto Nazionale di Fisica Nucleare.

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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. (2004). Measurement of the two photon decay of the χ_c0(1 ³P₀) state of charmonium. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 584(1-2), 16-21. https://doi.org/10.1016/j.physletb.2004.01.024

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, Pedlar, TK, Pordes, S, Robutti, E, Roethel, W, Rosen, JL, Rumerio, P, Rusack, R, Santroni, A, Schultz, J, Seo, SH, Seth, KK, Stancari, G, Stancari, M, Tomaradze, A, Uman, I, Vidnovic, T, Werkema, S & Zweber, P 2004, 'Measurement of the two photon decay of the χ_c0(1 ³P₀) state of charmonium', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 584, no. 1-2, pp. 16-21. https://doi.org/10.1016/j.physletb.2004.01.024

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title = "Measurement of the two photon decay of the χc0(1 3P0) state of charmonium",

abstract = "We report on the decay to two photons of the χc0(1 3P0) charmonium resonance formed in {\=p}p interactions at Fermilab experiment E835. We have measured the product of branching ratios BR(χc0→{\=p}p) x BR(χc0 →γγ)=(6.52±1.18(stat)-0.72 +0.48(sys))×10-8. Using values from the 2002 PDG, this measurement leads to the partial width Γ(χc0 →γγ)=2.9±0.9 keV.",

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 Pedlar, {T. K.} and S. Pordes and E. Robutti and W. Roethel and Rosen, {J. L.} and P. Rumerio and R. Rusack 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 are grateful for the technical support provided by Fermilab, in particular the Beams Division's Antiproton Source Department, and by the staffs of our institutions. This research is supported by the US Department of Energy and the Italian Istituto Nazionale di Fisica Nucleare.",

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T1 - Measurement of the two photon decay of the χc0(1 3P0) state of charmonium

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 - Pedlar, T. K.

AU - Pordes, S.

AU - Robutti, E.

AU - Roethel, W.

AU - Rosen, J. L.

AU - Rumerio, P.

AU - Rusack, R.

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 are grateful for the technical support provided by Fermilab, in particular the Beams Division's Antiproton Source Department, and by the staffs of our institutions. This research is supported by the US Department of Energy and the Italian Istituto Nazionale di Fisica Nucleare.

PY - 2004/3/25

Y1 - 2004/3/25

N2 - We report on the decay to two photons of the χc0(1 3P0) charmonium resonance formed in p̄p interactions at Fermilab experiment E835. We have measured the product of branching ratios BR(χc0→p̄p) x BR(χc0 →γγ)=(6.52±1.18(stat)-0.72 +0.48(sys))×10-8. Using values from the 2002 PDG, this measurement leads to the partial width Γ(χc0 →γγ)=2.9±0.9 keV.

AB - We report on the decay to two photons of the χc0(1 3P0) charmonium resonance formed in p̄p interactions at Fermilab experiment E835. We have measured the product of branching ratios BR(χc0→p̄p) x BR(χc0 →γγ)=(6.52±1.18(stat)-0.72 +0.48(sys))×10-8. Using values from the 2002 PDG, this measurement leads to the partial width Γ(χc0 →γγ)=2.9±0.9 keV.

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U2 - 10.1016/j.physletb.2004.01.024

DO - 10.1016/j.physletb.2004.01.024

M3 - Article

AN - SCOPUS:12144288562

SN - 0370-2693

VL - 584

SP - 16

EP - 21

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 -