On the decay mode $ Λ_{b} $ → $ X_{s} $γ

Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribu...
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Autor*in:	Colangelo, P. [verfasserIn] De Fazio, F. Loparco, F.

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Bottom Quarks Nonperturbative Effects Rare Decays

Anmerkung:	© The Author(s) 2023

Übergeordnetes Werk:	Enthalten in: Journal of high energy physics - Berlin : Springer, 1997, 2023(2023), 10 vom: 24. Okt.
Übergeordnetes Werk:	volume:2023 ; year:2023 ; number:10 ; day:24 ; month:10

Links:	Volltext

DOI / URN:	10.1007/JHEP10(2023)147

Katalog-ID:	SPR053538897

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allfields	10.1007/JHEP10(2023)147 doi (DE-627)SPR053538897 (SPR)JHEP10(2023)147-e DE-627 ger DE-627 rakwb eng Colangelo, P. verfasserin (orcid)0000-0002-5921-7701 aut On the decay mode $ Λ_{b} $ → $ X_{s} $γ 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213 De Fazio, F. (orcid)0000-0003-0695-2566 aut Loparco, F. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2023(2023), 10 vom: 24. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2023 year:2023 number:10 day:24 month:10 https://dx.doi.org/10.1007/JHEP10(2023)147 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2023 2023 10 24 10
spelling	10.1007/JHEP10(2023)147 doi (DE-627)SPR053538897 (SPR)JHEP10(2023)147-e DE-627 ger DE-627 rakwb eng Colangelo, P. verfasserin (orcid)0000-0002-5921-7701 aut On the decay mode $ Λ_{b} $ → $ X_{s} $γ 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213 De Fazio, F. (orcid)0000-0003-0695-2566 aut Loparco, F. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2023(2023), 10 vom: 24. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2023 year:2023 number:10 day:24 month:10 https://dx.doi.org/10.1007/JHEP10(2023)147 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2023 2023 10 24 10
allfields_unstemmed	10.1007/JHEP10(2023)147 doi (DE-627)SPR053538897 (SPR)JHEP10(2023)147-e DE-627 ger DE-627 rakwb eng Colangelo, P. verfasserin (orcid)0000-0002-5921-7701 aut On the decay mode $ Λ_{b} $ → $ X_{s} $γ 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213 De Fazio, F. (orcid)0000-0003-0695-2566 aut Loparco, F. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2023(2023), 10 vom: 24. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2023 year:2023 number:10 day:24 month:10 https://dx.doi.org/10.1007/JHEP10(2023)147 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2023 2023 10 24 10
allfieldsGer	10.1007/JHEP10(2023)147 doi (DE-627)SPR053538897 (SPR)JHEP10(2023)147-e DE-627 ger DE-627 rakwb eng Colangelo, P. verfasserin (orcid)0000-0002-5921-7701 aut On the decay mode $ Λ_{b} $ → $ X_{s} $γ 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213 De Fazio, F. (orcid)0000-0003-0695-2566 aut Loparco, F. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2023(2023), 10 vom: 24. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2023 year:2023 number:10 day:24 month:10 https://dx.doi.org/10.1007/JHEP10(2023)147 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2023 2023 10 24 10
allfieldsSound	10.1007/JHEP10(2023)147 doi (DE-627)SPR053538897 (SPR)JHEP10(2023)147-e DE-627 ger DE-627 rakwb eng Colangelo, P. verfasserin (orcid)0000-0002-5921-7701 aut On the decay mode $ Λ_{b} $ → $ X_{s} $γ 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213 De Fazio, F. (orcid)0000-0003-0695-2566 aut Loparco, F. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2023(2023), 10 vom: 24. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2023 year:2023 number:10 day:24 month:10 https://dx.doi.org/10.1007/JHEP10(2023)147 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2023 2023 10 24 10
language	English
source	Enthalten in Journal of high energy physics 2023(2023), 10 vom: 24. Okt. volume:2023 year:2023 number:10 day:24 month:10
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author	Colangelo, P.
spellingShingle	Colangelo, P. misc Bottom Quarks misc Nonperturbative Effects misc Rare Decays On the decay mode $ Λ_{b} $ → $ X_{s} $γ
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topic_title	On the decay mode $ Λ_{b} $ → $ X_{s} $γ Bottom Quarks (dpeaa)DE-He213 Nonperturbative Effects (dpeaa)DE-He213 Rare Decays (dpeaa)DE-He213
topic	misc Bottom Quarks misc Nonperturbative Effects misc Rare Decays
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title	On the decay mode $ Λ_{b} $ → $ X_{s} $γ
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title_full	On the decay mode $ Λ_{b} $ → $ X_{s} $γ
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title_sort	on the decay mode $ λ_{b} $ → $ x_{s} $γ
title_auth	On the decay mode $ Λ_{b} $ → $ X_{s} $γ
abstract	Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. © The Author(s) 2023
abstractGer	Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. © The Author(s) 2023
abstract_unstemmed	Abstract We study the inclusive Hb→ Xsγ decay with Hb a beauty baryon, in particular $ Λ_{b} $, employing an expansion in the heavy quark mass at %$ \mathcal{O}\left({m}_b^{-3}\right) %$ at leading order in αs, keeping the dependence on the hadron spin. For a polarized baryon we compute the distribution %$ \frac{d^2\Gamma}{dy\ d\cos {\theta}_P} %$, with y = 2Eγ/mb, Eγ the photon energy and θP the angle between the baryon spin vector and the photon momentum in the Hb rest-frame. We discuss the correlation between the baryon and photon polarization, and show that effects of physics beyond the Standard Model can modify the photon polarization asymmetry. We also discuss a method to treat the singular terms in the photon energy spectrum obtained by the OPE. © The Author(s) 2023
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title_short	On the decay mode $ Λ_{b} $ → $ X_{s} $γ
url	https://dx.doi.org/10.1007/JHEP10(2023)147
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