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oai:recercat.cat:2445/1315142025-12-05T16:56:49Zcom_2072_1057col_2072_478823col_2072_478917

Search for the highly suppressed decays B−→K+π−π− and B−→K−K−π+ Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration Física de partícules Experiments Particle physics Experiments We report a search for the decays B − → K + π − π − and B − → K − K − π + , which are highly suppressed in the standard model. Using a sample of ( 467 ± 5 ) × 10 6 B ¯¯¯ B pairs collected with the BABAR detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of B ( B − → K + π − π − ) < 9.5 × 10 − 7 and B ( B − → K − K − π + ) < 1.6 × 10 − 7 on the corresponding branching fractions, including systematic uncertainties. 2019-04-05T10:12:33Z 2019-04-05T10:12:33Z 2008-11-13 2019-04-05T10:12:33Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1550-7998 https://hdl.handle.net/2445/131514 577665 eng Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.78.091102 Physical Review D, 2008, vol. 78, num. 9, p. 091102 https://doi.org/10.1103/PhysRevD.78.091102 (c) American Physical Society, 2008 info:eu-repo/semantics/openAccess 9 p. application/pdf American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)