Search for the rare decay of B+ →+νγ with improved hadronic tagging

Standard

Search for the rare decay of B+ →+νγ with improved hadronic tagging. / The BELLE collaboration.

In: Physical Review D, Vol. 98, No. 11, 112016, 28.12.2018.

Research output: Contribution to journal › Article › peer-review

Harvard

The BELLE collaboration 2018, 'Search for the rare decay of B+ →+νγ with improved hadronic tagging', Physical Review D, vol. 98, no. 11, 112016. https://doi.org/10.1103/PhysRevD.98.112016

APA

The BELLE collaboration (2018). Search for the rare decay of B+ →+νγ with improved hadronic tagging. Physical Review D, 98(11), [112016]. https://doi.org/10.1103/PhysRevD.98.112016

Vancouver

The BELLE collaboration. Search for the rare decay of B+ →+νγ with improved hadronic tagging. Physical Review D. 2018 Dec 28;98(11):112016. doi: 10.1103/PhysRevD.98.112016

Author

The BELLE collaboration. / Search for the rare decay of B+ →+νγ with improved hadronic tagging. In: Physical Review D. 2018 ; Vol. 98, No. 11.

BibTeX

@article{1ef2988bd3104f439cfd4886554afec7,

title = "Search for the rare decay of B+ →+νγ with improved hadronic tagging",

abstract = "We present the result of the search for the rare B meson decay of B+→+νγ with =e,μ. For the search the full data set recorded by the Belle experiment of 711 fb-1 integrated luminosity near the (4S) resonance is used. Signal candidates are reconstructed for photon energies Eγ larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction ΔB with Eγ>1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of ΔB(B+→+νγ)<3.0×10-6 at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of λB>0.24 GeV at 90% CL.",

keywords = "MESON DECAYS, IDENTIFICATION, SYMMETRY",

author = "{The BELLE collaboration} and M. Gelb and Bernlochner, {F. U.} and P. Goldenzweig and F. Metzner and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and H. Atmacan and T. Aushev and R. Ayad and V. Babu and I. Badhrees and V. Bansal and P. Behera and C. Bele{\~n}o and B. Bhuyan and J. Biswal and A. Bobrov and M. Bra{\v c}ko and N. Braun and L. Cao and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and K. Cho and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and {Di Carlo}, S. and Z. Dole{\v Z}al and Dong, {T. V.} and S. Eidelman and D. Epifanov and Fast, {J. E.} and T. Ferber and A. Frey and Fulsom, {B. G.} and R. Garg and N. Gabyshev and A. Garmash and P. Krokovny and B. Shwartz and V. Zhilich and V. Zhulanov",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",

year = "2018",

month = dec,

day = "28",

doi = "10.1103/PhysRevD.98.112016",

language = "English",

volume = "98",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

RIS

TY - JOUR

T1 - Search for the rare decay of B+ →+νγ with improved hadronic tagging

AU - The BELLE collaboration

AU - Gelb, M.

AU - Bernlochner, F. U.

AU - Goldenzweig, P.

AU - Metzner, F.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bansal, V.

AU - Behera, P.

AU - Beleño, C.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bračko, M.

AU - Braun, N.

AU - Cao, L.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frey, A.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Krokovny, P.

AU - Shwartz, B.

AU - Zhilich, V.

AU - Zhulanov, V.

PY - 2018/12/28

Y1 - 2018/12/28

N2 - We present the result of the search for the rare B meson decay of B+→+νγ with =e,μ. For the search the full data set recorded by the Belle experiment of 711 fb-1 integrated luminosity near the (4S) resonance is used. Signal candidates are reconstructed for photon energies Eγ larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction ΔB with Eγ>1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of ΔB(B+→+νγ)<3.0×10-6 at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of λB>0.24 GeV at 90% CL.

AB - We present the result of the search for the rare B meson decay of B+→+νγ with =e,μ. For the search the full data set recorded by the Belle experiment of 711 fb-1 integrated luminosity near the (4S) resonance is used. Signal candidates are reconstructed for photon energies Eγ larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction ΔB with Eγ>1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of ΔB(B+→+νγ)<3.0×10-6 at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of λB>0.24 GeV at 90% CL.

KW - MESON DECAYS

KW - IDENTIFICATION

KW - SYMMETRY

UR - http://www.scopus.com/inward/record.url?scp=85059446050&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.98.112016

DO - 10.1103/PhysRevD.98.112016

M3 - Article

AN - SCOPUS:85059446050

VL - 98

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 11

M1 - 112016

ER -

ID: 18051542