Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC

We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distri...
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Autor*in:	Dongsheng Li [verfasserIn] Fan Si [verfasserIn] Yidan Zhao [verfasserIn] Pengyu Zhou [verfasserIn] Yifei Zhang [verfasserIn] Xiujun Li [verfasserIn] Chengxi Yang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow

Übergeordnetes Werk:	In: Physics Letters B - Elsevier, 2015, 832(2022), Seite 137249-
Übergeordnetes Werk:	volume:832 ; year:2022 ; pages:137249-

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.physletb.2022.137249

Katalog-ID:	DOAJ017819792

Internformat


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publishDate	2022
allfields	10.1016/j.physletb.2022.137249 doi (DE-627)DOAJ017819792 (DE-599)DOAJf5dabb42050f432fb014b6e5b4d0c755 DE-627 ger DE-627 rakwb eng QC1-999 Dongsheng Li verfasserin aut Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy. Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics Fan Si verfasserin aut Yidan Zhao verfasserin aut Pengyu Zhou verfasserin aut Yifei Zhang verfasserin aut Xiujun Li verfasserin aut Chengxi Yang verfasserin aut In Physics Letters B Elsevier, 2015 832(2022), Seite 137249- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:832 year:2022 pages:137249- https://doi.org/10.1016/j.physletb.2022.137249 kostenfrei https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322003835 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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 832 2022 137249-
spelling	10.1016/j.physletb.2022.137249 doi (DE-627)DOAJ017819792 (DE-599)DOAJf5dabb42050f432fb014b6e5b4d0c755 DE-627 ger DE-627 rakwb eng QC1-999 Dongsheng Li verfasserin aut Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy. Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics Fan Si verfasserin aut Yidan Zhao verfasserin aut Pengyu Zhou verfasserin aut Yifei Zhang verfasserin aut Xiujun Li verfasserin aut Chengxi Yang verfasserin aut In Physics Letters B Elsevier, 2015 832(2022), Seite 137249- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:832 year:2022 pages:137249- https://doi.org/10.1016/j.physletb.2022.137249 kostenfrei https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322003835 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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 832 2022 137249-
allfields_unstemmed	10.1016/j.physletb.2022.137249 doi (DE-627)DOAJ017819792 (DE-599)DOAJf5dabb42050f432fb014b6e5b4d0c755 DE-627 ger DE-627 rakwb eng QC1-999 Dongsheng Li verfasserin aut Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy. Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics Fan Si verfasserin aut Yidan Zhao verfasserin aut Pengyu Zhou verfasserin aut Yifei Zhang verfasserin aut Xiujun Li verfasserin aut Chengxi Yang verfasserin aut In Physics Letters B Elsevier, 2015 832(2022), Seite 137249- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:832 year:2022 pages:137249- https://doi.org/10.1016/j.physletb.2022.137249 kostenfrei https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322003835 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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 832 2022 137249-
allfieldsGer	10.1016/j.physletb.2022.137249 doi (DE-627)DOAJ017819792 (DE-599)DOAJf5dabb42050f432fb014b6e5b4d0c755 DE-627 ger DE-627 rakwb eng QC1-999 Dongsheng Li verfasserin aut Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy. Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics Fan Si verfasserin aut Yidan Zhao verfasserin aut Pengyu Zhou verfasserin aut Yifei Zhang verfasserin aut Xiujun Li verfasserin aut Chengxi Yang verfasserin aut In Physics Letters B Elsevier, 2015 832(2022), Seite 137249- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:832 year:2022 pages:137249- https://doi.org/10.1016/j.physletb.2022.137249 kostenfrei https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322003835 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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 832 2022 137249-
allfieldsSound	10.1016/j.physletb.2022.137249 doi (DE-627)DOAJ017819792 (DE-599)DOAJf5dabb42050f432fb014b6e5b4d0c755 DE-627 ger DE-627 rakwb eng QC1-999 Dongsheng Li verfasserin aut Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy. Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics Fan Si verfasserin aut Yidan Zhao verfasserin aut Pengyu Zhou verfasserin aut Yifei Zhang verfasserin aut Xiujun Li verfasserin aut Chengxi Yang verfasserin aut In Physics Letters B Elsevier, 2015 832(2022), Seite 137249- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:832 year:2022 pages:137249- https://doi.org/10.1016/j.physletb.2022.137249 kostenfrei https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322003835 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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 832 2022 137249-
language	English
source	In Physics Letters B 832(2022), Seite 137249- volume:832 year:2022 pages:137249-
sourceStr	In Physics Letters B 832(2022), Seite 137249- volume:832 year:2022 pages:137249-
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow Physics
isfreeaccess_bool	true
container_title	Physics Letters B
authorswithroles_txt_mv	Dongsheng Li @@aut@@ Fan Si @@aut@@ Yidan Zhao @@aut@@ Pengyu Zhou @@aut@@ Yifei Zhang @@aut@@ Xiujun Li @@aut@@ Chengxi Yang @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	266015360
id	DOAJ017819792
language_de	englisch
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callnumber-first	Q - Science
author	Dongsheng Li
spellingShingle	Dongsheng Li misc QC1-999 misc Quark-gluon plasma misc Charm misc Beauty misc Semileptonic decay misc Nuclear modification factor misc Elliptic flow misc Physics Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC
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topic_title	QC1-999 Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC Quark-gluon plasma Charm Beauty Semileptonic decay Nuclear modification factor Elliptic flow
topic	misc QC1-999 misc Quark-gluon plasma misc Charm misc Beauty misc Semileptonic decay misc Nuclear modification factor misc Elliptic flow misc Physics
topic_unstemmed	misc QC1-999 misc Quark-gluon plasma misc Charm misc Beauty misc Semileptonic decay misc Nuclear modification factor misc Elliptic flow misc Physics
topic_browse	misc QC1-999 misc Quark-gluon plasma misc Charm misc Beauty misc Semileptonic decay misc Nuclear modification factor misc Elliptic flow misc Physics
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title	Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC
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title_full	Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC
author_sort	Dongsheng Li
journal	Physics Letters B
journalStr	Physics Letters B
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author_browse	Dongsheng Li Fan Si Yidan Zhao Pengyu Zhou Yifei Zhang Xiujun Li Chengxi Yang
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author-letter	Dongsheng Li
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title_sort	charm and beauty isolation from heavy flavor decay electrons in p+p and pb+pb collisions at snn = 5.02 tev at lhc
callnumber	QC1-999
title_auth	Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC
abstract	We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy.
abstractGer	We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy.
abstract_unstemmed	We present an analysis on the heavy flavor hadron decay electrons with charm and beauty contributions decomposed via a data driven method in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC. The transverse momentum pT spectra, nuclear modification factor RAA and azimuthal anisotropic flow v2 distributions of electrons from charm and beauty decays are obtained. We find that the electron RAA from charm (RAAc→e) and beauty (RAAb→e) decays are suppressed at pT<2.0 GeV/c in Pb+Pb collisions, which indicates that charm and beauty interact with and lose their energy in the hot-dense medium. A less suppression of RAAb→e than RAAc→e at 2.0<pT<8.0 GeV/c is observed, which is consistent with the mass-dependent partonic energy loss scenario. A non-zero electron v2 from beauty decays (v2b→e) is observed and in good agreement with ALICE measurement. At low pT from 1.0 to 3.0 GeV/c, a discrepancy between RHIC and LHC results is observed with an 85% confidence level, which might be a possible hint of an energy-dependent behavior of beauty quarks reacting with the medium created in heavy-ion collisions. At 3.0<pT<7.0 GeV/c, v2b→e deviates from a number-of-constituent-quark (NCQ) scaling hypothesis, which favors that beauty quark is unlikely thermalized in heavy-ion collisions at LHC energy.
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title_short	Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC
url	https://doi.org/10.1016/j.physletb.2022.137249 https://doaj.org/article/f5dabb42050f432fb014b6e5b4d0c755 http://www.sciencedirect.com/science/article/pii/S0370269322003835 https://doaj.org/toc/0370-2693
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Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at sNN = 5.02 TeV at LHC

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