Details

Autor(en) / Beteiligte

• Abramowicz, H
• Adams, D L
• Amako, K
• Amelung, C
• Amorim, A
• Angelidakis, S
• Anisenkov, A V
• Arce, A T H
• Asquith, L
• Bauer, F
• Benekos, N
• Bertsche, D
• Blair, R E
• Boehler, M
• Borissov, G
• Budagov, I A
• Burdin, S
• Buszello, C P
• Byszewski, M
• Cabrera Urbán, S
• Camarda, S
• Cantero, J
• Cinca, D
• Costa, G
• Cribbs, W A
• Cuhadar Donszelmann, T
• D'Onofrio, M
• Dano Hoffmann, M
• Davison, P
• Debenedetti, C
• Di Micco, B
• Dita, P
• Dohmae, T
• Dolejsi, J
• Dolezal, Z
• Dwuznik, M
• Erdmann, J
• Ertel, E
• Esch, H
• Fassnacht, P
• Flick, T
• Gan, K K
• Glazov, A
• Goddard, J R
• Grahn, K-J
• Han, L
• Heim, S
• Hellman, S
• Hensel, C
• Jackson, P
• Jakobs, K
• Jeanty, L
• Joergensen, M D
• Konoplich, R
• Lançon, E
• Law, A T
• Li, Y
• Lohse, T
• Majewski, S
• Malaescu, B
• Malon, D
• Marshall, Z
• Masik, J
• Massa, I
• Mehta, A
• Miucci, A
• Monk, J
• Morris, J D
• Nielsen, J
• Nunes Hanninger, G
• Otero y Garzon, G
• Padilla Aranda, C
• Peleganchuk, S V
• Prell, S
• Puddu, D
• Randle-Conde, A S
• Redlinger, G
• Rehnisch, L
• Rimoldi, A
• Rompotis, N
• Rosenthal, O
• Rousseau, D
• Ruan, X
• Rybar, M
• Schaefer, D
• Schaepe, S
• Seliverstov, D M
• Semprini-Cesari, N
• Sfyrla, A
• Shank, J T
• Sinev, N B
• Tanasijczuk, A J
• Timoshenko, S
• Tremblet, L
• Valkar, S
• Vazeille, F
• von Radziewski, H
• Vorobev, K
• Vuillermet, R
• Zhu, C G

Titel

Observation of an excited Bc(±) meson state with the ATLAS detector

Ist Teil von

• Physical review letters, 2014-11, Vol.113 (21), p.212004-212004

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2014

Link zum Volltext

Quelle

APS_美国物理学会过刊

Beschreibungen/Notizen

• A search for excited states of the Bc(±) meson is performed using 4.9  fb(-1) of 7 TeV and 19.2  fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay Bc(±)→J/ψπ(±). The state appears in the m(Bc(±)π(+)π(-))-m(Bc(±))-2m(π(±)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842±4±5  MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the Bc(±) meson, Bc(±)(2S).