Details

Autor(en) / Beteiligte

• Lees, J P
• Tisserand, V
• Schroeder, T
• Mattison, T S
• McKenna, J A
• Blinov, V E
• Druzhinin, V P
• Serednyakov, S I
• Skovpen, Yu I
• Todyshev, K Yu
• Gary, J W
• Long, O
• Panduro Vazquez, W
• Cheng, C H
• Echenard, B
• Kim, J
• Li, Y
• Ongmongkolkul, P
• Huard, Z
• Meadows, B T
• Sun, L
• Wagner, S R
• Verderi, M
• Bettoni, D
• Calabrese, R
• Fioravanti, E
• Santoro, V
• Peruzzi, I M
• Zallo, A
• Patrignani, C
• Mallik, U
• Gritsan, A V
• Arnaud, N
• Davier, M
• Le Diberder, F
• Lutz, A M
• Lange, D J
• Coleman, J P
• Davis, C L
• Schubert, K R
• Barlow, R J
• Lafferty, G D
• Jawahery, A
• Robertson, S H
• Neri, N
• Summers, D J
• Taras, P
• De Nardo, G
• Jessop, C P
• Kass, R
• Margoni, M
• Akar, S
• Ben-Haim, E
• Calderini, G
• Ocariz, J
• Biasini, M
• Manoni, E
• Rossi, A
• Carpinelli, M
• Casarosa, G
• Chrzaszcz, M
• Paoloni, E
• Rama, M
• Rizzo, G
• Ferrarotto, F
• Pilloni, A
• Bünger, C
• Grünberg, O
• Heß, M
• Voß, C
• Adye, T
• Emery, S
• Aston, D
• Convery, M R
• Dunwoodie, W
• Field, R C
• Fulsom, B G
• Kim, P
• Luitz, S
• MacFarlane, D B
• Muller, D R
• Roodman, A
• Va'vra, J
• Purohit, M V
• Ahmed, H
• Burchat, P R
• Ernst, J A
• Guttman, N
• Peimer, D R
• Soffer, A
• Spanier, S M
• Izen, J M
• Filippi, A
• Albert, J
• Kowalewski, R
• Roney, J M
• Gershon, T J
• Harrison, P F
• Prepost, R
• Wu, S L

Titel

Search for a Stable Six-Quark State at BABAR

Ist Teil von

• Physical review letters, 2019-02, Vol.122 (7), p.072002-072002, Article 072002

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2019

Quelle

American Physical Society

Beschreibungen/Notizen

• Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in ϒ→SΛ[over ¯]Λ[over ¯] decays based on a sample of 90×10^{6}ϒ(2S) and 110×10^{6}ϒ(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined ϒ(2S,3S)→SΛ[over ¯]Λ[over ¯] branching fraction in the range (1.2-1.4)×10^{-7} are derived for m_{S}<2.05  GeV. These bounds set stringent limits on the existence of such exotic particles.