Details

Autor(en) / Beteiligte

• Dobbs, S
• Metreveli, Z
• Seth, K K
• Tomaradze, A
• Libby, J
• Powell, A
• Wilkinson, G
• Ecklund, K M
• Love, W
• Savinov, V
• Lopez, A
• Mendez, H
• Ramirez, J
• Ge, J Y
• Miller, D H
• Shipsey, I P J
• Xin, B
• Adams, G S
• Anderson, M
• Cummings, J P
• Danko, I
• Hu, D
• Moziak, B
• Napolitano, J
• He, Q
• Insler, J
• Muramatsu, H
• Park, C S
• Thorndike, E H
• Yang, F
• Artuso, M
• Blusk, S
• Khalil, S
• Li, J
• Mountain, R
• Nisar, S
• Randrianarivony, K
• Sultana, N
• Skwarnicki, T
• Stone, S
• Wang, J C
• Zhang, L M
• Bonvicini, G
• Cinabro, D
• Dubrovin, M
• Lincoln, A
• Naik, P
• Rademacker, J
• Asner, D M
• Edwards, K W
• Reed, J
• Briere, R A
• Ferguson, T
• Tatishvili, G
• Vogel, H
• Watkins, M E
• Rosner, J L
• Alexander, J P
• Cassel, D G
• Duboscq, J E
• Ehrlich, R
• Fields, L
• Galik, R S
• Gibbons, L
• Gray, R
• Gray, S W
• Hartill, D L
• Heltsley, B K
• Hertz, D
• Hunt, J M
• Kandaswamy, J
• Kreinick, D L
• Kuznetsov, V E
• Ledoux, J
• Mahlke-Krüger, H
• Mohapatra, D
• Onyisi, P U E
• Patterson, J R
• Peterson, D
• Riley, D
• Ryd, A
• Sadoff, A J
• Shi, X
• Stroiney, S
• Sun, W M
• Wilksen, T
• Athar, S B
• Patel, R
• Yelton, J
• Rubin, P
• Eisenstein, B I
• Karliner, I
• Mehrabyan, S
• Lowrey, N
• Selen, M
• White, E J
• Wiss, J
• Mitchell, R E
• Shepherd, M R
• Besson, D

Titel

Precision measurement of the mass of the hc(1P1) state of charmonium

Ist Teil von

• Physical review letters, 2008-10, Vol.101 (18), p.182003-182003

Ort / Verlag

United States

Erscheinungsjahr

2008

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• A precision measurement of the mass of the h_{c}(1P1) state of charmonium has been made using a sample of 24.5x10;{6} psi(2S) events produced in e;{+}e;{-} annihilation at the Cornell Electron Storage Ring (CESR). The reaction used was psi(2S)-->pi;{0}h_{c}, pi;{0}-->gammagamma, h_{c}-->gammaeta_{c}, and the reaction products were detected in the CLEO-c detector. Data have been analyzed both for the inclusive reaction and for the exclusive reactions in which eta_{c} decays are reconstructed in 15 hadronic decay channels. Consistent results are obtained in the two analyses. The averaged results of the present measurements are M(h_{c})=3525.28+/-0.19(stat.)+/-0.12(syst.) MeV, and B(psi(2S)-->pi;{0}h_{c})xB(h_{c}-->gammaeta_{c})=(4.19+/-0.32+/-0.45)x10;{-4}. Using the ;{3}P_{J} centroid mass, DeltaM_{hf}(1P) identical withM(chi_{cJ})-M(h_{c})=+0.02+/-0.19+/-0.13 MeV.