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Search for the decay B0→pp¯
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- Meyer, TI;
- Petersen, BA;
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- Ernst, JA;
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- Saleem, M;
- Wappler, FR;
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- Krishnamurthy, M;
- Spanier, SM;
- Eckmann, R;
- Kim, H;
- Ritchie, JL;
- Satpathy, A;
- Schwitters, RF;
- Izen, JM;
- Kitayama, I;
- Lou, XC;
- Ye, S;
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- Gallo, F;
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- Borean, C;
- Bosisio, L;
- Cartaro, C;
- Cossutti, F;
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- Kowalewski, R;
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- Band, HR;
- Dasu, S;
- Datta, M;
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- Graham, M;
- Hollar, JJ;
- Johnson, JR;
- Kutter, PE;
- Li, H;
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- Di Lodovico, F;
- Mihalyi, A;
- Mohapatra, AK;
- Pan, Y;
- Prepost, R;
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- Sekula, SJ;
- Tan, P;
- von Wimmersperg-Toeller, JH;
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- Wu, SL;
- Yu, Z;
- Neal, H
- et al.
Abstract
We present the result of a search for the charmless two-body baryonic decay B0→ppmacr; in a sample of 88 million Y(4S)→BB̄ decays collected by the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. We use Cherenkov radiation to identify protons cleanly, and determine the signal yield with a maximum-likelihood fit technique using kinematic and topological information. We find no evidence for a signal and place a 90% confidence-level upper limit of B(B0→ pp̄)<2.7× 10-7. © 2004 The American Physical Society.
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