Results on Charmed Meson Spectroscopy from FOCUS

Alimonti G.; Anjos J.C.; Arena V; Bediaga I.; Bianco S.; Boca G.; Bonomi G.; Boschini M.; Brambilla D.; Butler J.N.; Caccianiga B.; Calandrino A; Carrillo S.; Casimiro E.; Cawlfield C.; Cheung H.W.K.; K. Cho; Chung Y.S; Cinquini L.; Copty N.; Cumalat J.P.; D'Angelo P.; Dicorato M.; Dini P.; Engh D.; Fabbri F.L.; Gaines I.; Garbincius P.H.; Gardner Michael R; Garren L.A.; Giammarchi M; Gianini G.; Göbel C.; Gottschalk E.; Gourlay S.A.; Handler T.; Hernandez H.; Hernandez Sanchez; Hosack M.; Iii Davenport; Inzani P.; Johns We; Kang J.S.; Kasper P.H.; Kim D.Y.; Ko B.R.; Kreymer A.E.; Kutschke R.; Kwak J.W.; Kwon Y; Lee K.B.; Leveraro F.; Liguori G.; Link J.M.; Lopez A.M.; Magnin J.; Malvezzi S.; Menasce D.; Mendez H.; Mendez L.; Merlo M.; Mezzadri M.; Milazzo L.; Miranda De; Mirles A.; Montiel E.; Moroni L.; Myung Ss; Nehring M.S.; Olaya D.; O'Reilly B.; Pantea D.; Paolone V.S.; Park H.; Park K.S.; Pedrini D.; Pepe I.M.; F. Prelz; Purohit M.; Quiñones Santos J; Rahimi A.; Ramírez Je; Ratti Sp; Reis Dos; Reyes M.; Riccardi C.; Rivera C.; Rovere M.; Sala A.; Sala S.; Sales M.; Sarwar S.; Sheaff M; Sheldon P.D.; Simão F.; Stenson Erin K; Torre Antonello P; Uribe C.; Vaandering E.W.; Vásquez Martos F

doi:10.15161/oar.it/vpp6j-56r95

December 19, 2000Open Access

Results on Charmed Meson Spectroscopy from FOCUS

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Key Points

To measure the masses and widths of specific charm meson states, namely D^0_2 and D^+_2.
Preliminary measurement conducted by the FOCUS Collaboration at Fermilab
Analysis of decay channels to D^+pi^- and D^0pi^+
Fit of the invariant mass distribution including terms for background structures
D^0_2 state observed with mass of 2463.5 MeV/c^2 and width measurements
D^+_2 state reported with mass of 2468.2 MeV/c^2 and width measurements
An additional term required in the fit to describe a broad structure in the mass distribution

Implication

FOCUS Collaboration measures masses and widths of L=1 charm mesons, suggesting new insights in particle physics.

Abstract

We report the preliminary measurement by the FOCUS Collaboration (E831 at Fermilab) of masses and widths of the L=1 charm mesons: a D*^0_2 state of mass (width) 2463 .5 ±1 .5 ±1 .5(30 .5 ±1 .9 ±3 .8) MeV/c^2 decaying to D^+pi^-, and a D*^+_2 state of mass (width) 2468.2 ±1 .5 ±1 .4(28 .6 ±1 .3 ±3 .8)M V /c 2 decaying to D^0pi^+. The fit of the invariant mass distribution requires an additional term to account for a broad structure over background.

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G. et al. (2000) studied this question.

synapsesocial.com/papers/69a91e4cd6127c7a504c2170 https://doi.org/10.15161/oar.it/vpp6j-56r95

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Results on Charmed Meson Spectroscopy from FOCUS

Key Points

Implication

Abstract

Discussion

Cite This Study

Results on Charmed Meson Spectroscopy from FOCUS

Key Points

Implication

Abstract

Discussion

Cite This Study

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