English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a model-independent description of the exclusive rare decays B->K* e+e- in the low recoil region (large lepton invariant mass q^2 ~ m_b^2). Inthis region the long-distance effects from quark loops can be computed with thehelp of an operator product expansion in 1/Q, with Q={m_b, \sqrt{q^2}}.Nonperturbative effects up to and including terms suppressed by Lambda/Q andmc^2/mb^2 relative to the short-distance amplitude can be included in amodel-independent way. Based on these results, we propose an improved methodfor determining the CKM matrix element |V{ub}| from a combination of rare andsemileptonic B and D decays near the zero recoil point. The residualtheoretical uncertainty from long distance effects in this |V{ub}|determination comes from terms in the OPE of order alpha_s(Q)\Lambda/mb,alpha_s^2(Q), mc^4/mb^4$ and duality violations and is estimated to be below10%.Comment: 21 pages RevTex, 2 figures; v3: extensive numerical changes in the  NLL analysis, with improved stability under scale dependence. Typos fixed,  version to appear in Phys.Rev.

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Exclusive rare<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:msup><mml:mi>ℓ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>ℓ</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>decays at low recoil: Controlling the long-distance effects

Exclusive rareB→K*ℓ+ℓ−decays at low recoil: Controlling the long-distance effects