| Title: |
Search for Production of Invisible Final States in Single-Photon Decays of Υ(1S) |
| Authors: |
del Amo Sanchez, P; Lees, JP; Poireau, V; Prencipe, E; Tisserand, V; Tico, J Garra; Grauges, E; Martinelli, M; Milanes, DA; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Brown, DN; Chistiakova, MV; Jensen, F; Kerth, LT; Kolomensky, Yu G; Lynch, G; Osipenkov, IL; Koch, H; Schroeder, T; Asgeirsson, DJ; Hearty, C; Mattison, TS; McKenna, JA; Khan, A; Randle-Conde, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Yushkov, AN; Bondioli, M; Curry, S; Kirkby, D; Lankford, AJ; Mandelkern, M; Martin, EC; Stoker, DP; Atmacan, H; Gary, JW; Liu, F; Long, O; Vitug, GM; Campagnari, C; Hong, TM; Kovalskyi, D; Richman, JD; West, C; Eisner, AM; Heusch, CA; Kroseberg, J; Lockman, WS; Martinez, AJ; Schalk, T; Schumm, BA; Seiden, A; Winstrom, LO; Cheng, CH; Doll, DA; Echenard, B; Hitlin, DG; Ongmongkolkul, P; Porter, FC; Rakitin, AY; Andreassen, R; Dubrovin, MS; Mancinelli, G; Meadows, BT; Sokoloff, MD; Bloom, PC; Ford, WT; Gaz, A; Nagel, M; Nauenberg, U; Smith, JG; Wagner, SR; Ayad, R; Toki, WH; Jasper, H; Karbach, TM; Petzold, A; Spaan, B; Kobel, MJ; Schubert, KR; Schwierz, R; Bernard, D; Verderi, M; Clark, PJ; Playfer, S; Watson, JE; Andreotti, M |
| Source: |
Physical Review Letters, vol 107, iss 2 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2011 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); BABAR Collaboration; 01 Mathematical Sciences (for); 02 Physical Sciences (for); 09 Engineering (for); General Physics (science-metrix); 40 Engineering (for-2020); 49 Mathematical sciences (for-2020) |
| Description: |
We search for single-photon decays of the Υ(1S) resonance, Υ → γ + invisible, where the invisible state is either a particle of definite mass, such as a light Higgs boson A⁰, or a pair of dark matter particles, χχ. Both A⁰ and χ are assumed to have zero spin. We tag Υ(1S) decays with a dipion transition Υ(2S) → π⁺π⁻Υ(1S) and look for events with a single energetic photon and significant missing energy. We find no evidence for such processes in the mass range m(A⁰) ≤ 9.2 GeV and m(χ) ≤ 4.5 GeV in the sample of 98 × 10⁶ Υ(2S) decays collected with the BABAR detector and set stringent limits on new physics models that contain light dark matter states. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt04f2t15h; https://escholarship.org/uc/item/04f2t15h; https://escholarship.org/content/qt04f2t15h/qt04f2t15h.pdf |
| DOI: |
10.1103/physrevlett.107.021804 |
| Availability: |
https://escholarship.org/uc/item/04f2t15h; https://escholarship.org/content/qt04f2t15h/qt04f2t15h.pdf; https://doi.org/10.1103/physrevlett.107.021804 |
| Rights: |
CC-BY |
| Accession Number: |
edsbas.DEF720CE |
| Database: |
BASE |