# B \\to X\_s \\ell^+ \\ell^- at Belle

Source: [B \\to X\_s \\ell^+ \\ell^- at Belle](<https://www.sota2.com/research/paper/68fa3a4c1e209131ce8c9868>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T23:58:38.326Z

Authors: K. Senyo

Published: 2002-07-01T02:52:49.000Z

## Abstract

Evidence for the inclusive $B \\to X\_s \\ell^+ \\ell^-$ decay has been presented based on 41.8 fb-1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. A preliminary result for the branching fraction is B($B \\to X\_s \\ell^+ \\ell^-$) = (7.1 +- 1.6 (stat.) + 1.4 - 1.2(syst.)) \\times 10^-6.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/hep-ex/0207005>)

[PDF](<https://arxiv.org/pdf/hep-ex/0207005.pdf>)