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Author  |
Kamenik, J.F.; Kosnik, N.; Novoa-Brunet, M. |
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Title |
CP-odd window into long distance dynamics in rare semileptonic B decays |
Type |
Journal Article |
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Year |
2024 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
110 |
Issue |
5 |
Pages |
054013 - 8pp |
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Abstract |
We consider the combined measurements of -averaged decay rates and direct asymmetries of (+/-) -> (+/-)l(+)l(-) and (+/-) -> (+/-)l(+)l(-) to probe (nonlocal) four-quark operator matrix element contributions to rare semileptonic meson decays. We also explore how their effects could be in principle disentangled from possible local new physics effects using -spin relations. To this end, we construct a ratio of -odd decay rate differences which are exactly predicted within the standard model in the -spin limit, while the leading -spin breaking effects can also be systematically calculated. Our results motivate binned measurements of the direct asymmetry in (+/-) -> (+/-)l(+)l(-) as well as dedicated theoretical estimates of -spin breaking both in local form factors as well as in four-quark matrix elements. |
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Address |
[Kamenik, Jernej F.; Kosnik, Nejc] Jozef Stefan Inst, Jamova 39, Ljubljana 1000, Slovenia, Email: jernej.kamenik@cern.ch; |
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Publisher |
Amer Physical Soc |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
2470-0010 |
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Notes |
WOS:001317458200008 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6263 |
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