Search for a long-lived spin-0 particle in $b \to $ s quark transitions at the Belle II experiment - INSPIRE

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Search for a long-lived spin-0 particle in $b \to$ s quark transitions at the Belle II experiment

Sascha Simon Dreyer
(
- Hamburg U.
)

Dec 21, 2023

241 pages

Supervisors:

Thesis: PhD

Hamburg U.

(2023)

Published: Dec 21, 2023

URN/HDL:

urn:nbn:de:gbv:18-ediss-115439

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Abstract: (U. Hamburg (main))

Phenomena such as dark matter can be connected to the standard model via additional spin-0 mediators. This doctoral thesis describes a search for a long-lived spin-0 particle S in rare B-meson decays mediated by b → s quark transitions.A dataset corresponding to an integrated luminosity of 189fb−1 of e+e− collisions collected at the Υ(4S) resonance energy by the Belle II experiment is analysed. The search is carried out in eight exclusive channels, the two modes of production B+ → K+S and B0 → K∗0 S with decays via S → e+e−/μ+μ−/π+π−/K+K−. Decays of the S to standard model particles are motivated if the decay to dark matter is kinematically not possible. Mediator masses between (0.025 − 4.78) GeV/c2 and lifetimes between (0.001 − 400) cm are probed. Long-lived particle reconstruction is studied and validated with K0S-mesons. Maximum likelihood fits to the reconstructed S mass distribution are S used to determine the signal yield.No evidence for the signal process is found. Model-independent upper limits are derived on the branching fractions of the signal processes. The upper limits extend down to the order of O(10−7). These are the first constraints on hadronic final states of the S produced in B → KS and the most stringent bounds from a direct search for S → e+e− at e+e− colliders.The results are interpreted in models that predict a dark Higgs-like scalar and an axionlike particle with fermion couplings. The model-dependent bounds are competitive with existing experimental constraints.

530: Physik
Elementarteilchenphysik
Datenanalyse
Belle-II-Detektor
Dunkle Materie
electron positron: annihilation
electron positron: colliding beams
quark: transition
B: rare decay
resonance: energy

References(183)

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[1]

Review of Particle Physics

R.L. Workman
(
- George Washington U.
)
,
V.D. Burkert
(
- Jefferson Lab
)
,
V. Crede
(
- Florida State U.
)
,
E. Klempt
(
- Bonn U., HISKP
)
,
U. Thoma
(
- Bonn U., HISKP
)

et al.

- PTEP 2022 (2022) 083C01
•
DOI:
- 10.1093/ptep/ptac097

[2]

Dark Matter: A Primer

Katherine Garrett
(
- Creighton U.
)
,
Gintaras Duda
(
- Creighton U.
)

- Adv.Astron. 2011 (2011) 968283
•
e-Print:
- 1006.2483
•
DOI:
- 10.1155/2011/968283

[3]

Planck 2018 results. VI. Cosmological parameters

Planck

Collaboration

•

N. Aghanim
(
- Orsay, IAS
)

et al.

- Astron.Astrophys. 641 (2020) A6,
- Astron.Astrophys. 652 (2021) C4 (erratum)
•
e-Print:
- 1807.06209
•
DOI:
- 10.1051/0004-6361/201833910

[3]

Planck 2018 results. VI. Cosmological parameters

Planck

Collaboration

•

N. Aghanim
(
- Orsay, IAS
)

et al.

- Astron.Astrophys. 641 (2020) A6,
- Astron.Astrophys. 652 (2021) C4 (erratum)
•
e-Print:
- 1807.06209
•
DOI:
- 10.1051/0004-6361/201833910

[4]

Particle dark matter: Evidence, candidates and constraints

- Phys.Rept. 405 (2005) 279-390
•
e-Print:
- hep-ph/0404175
•
DOI:
- 10.1016/j.physrep.2004.08.031

[5]

Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation

Gary Steigman
(
)
,
Basudeb Dasgupta
(
- Ohio State U., CCAPP
)
,
John F. Beacom
(
)

- Phys.Rev.D 86 (2012) 023506
•
e-Print:
- 1204.3622
•
DOI:
- 10.1103/PhysRevD.86.023506

[6]

Freeze-In Production of FIMP Dark Matter

Lawrence J. Hall
(
- UC, Berkeley and
- LBL, Berkeley and
- Tokyo U., IPMU
)
,
Karsten Jedamzik
(
- Montpellier U.
)
,
John March-Russell
(
- Oxford U., Theor. Phys.
)
,
Stephen M. West
(
- Royal Holloway, U. of London and
- Rutherford
)

- JHEP 03 (2010) 080
•
e-Print:
- 0911.1120
•
DOI:
- 10.1007/JHEP03(2010)080

[7]

Explosive dark matter annihilation

Junji Hisano
(
- Tokyo U., ICRR
)
,
Shigeki Matsumoto
(
- Tokyo U., ICRR
)
,
Mihoko M. Nojiri
(
- Kyoto U., Yukawa Inst., Kyoto
)

- Phys.Rev.Lett. 92 (2004) 031303
•
e-Print:
- hep-ph/0307216
•
DOI:
- 10.1103/PhysRevLett.92.031303

[8]

Dark matter progenitor: Light vector boson decay into sterile neutrinos

Brian Shuve
(
- Perimeter Inst. Theor. Phys. and
- McMaster U.
)
,
Itay Yavin
(
- Perimeter Inst. Theor. Phys. and
- McMaster U.
)

- Phys.Rev.D 89 (2014) 11, 113004
•
e-Print:
- 1403.2727
•
DOI:
- 10.1103/PhysRevD.89.113004

[9]

Cosmological Constraints on the Properties of Weakly Interacting Massive Particles

Gary Steigman
(
- Delaware U., Bartol Inst.
)
,
Michael S. Turner
(
- Chicago U., EFI and
- Fermilab
)

- Nucl.Phys.B 253 (1985) 375-386
•
DOI:
- 10.1016/0550-3213(85)90537-1

[10]

A theory of dark matter

N. Arkani-Hamed
,
D.P. Finkbeiner
,
T.R. Slatyer
,
N. Weiner

- Phys.Rev.D 79 (2009) 015

[11]

WIMP dark matter candidates and searches—current status and future prospects

Leszek Roszkowski
(
- Sheffield U. and
- Warsaw, Inst. Nucl. Studies
)
,
Enrico Maria Sessolo
(
- Tech. U., Dortmund (main) and
- Warsaw, Inst. Nucl. Studies
)
,
Sebastian Trojanowski
(
- UC, Irvine and
- Warsaw, Inst. Nucl. Studies
)

- Rept.Prog.Phys. 81 (2018) 6, 066201
•
e-Print:
- 1707.06277
•
DOI:
- 10.1088/1361-6633/aab913

[12]

Constraints on Light Dark Matter and U bosons, from psi, Upsilon, K+, pi0, eta and eta-prime decays

Pierre Fayet
(
- Ecole Normale Superieure
)

- Phys.Rev.D 74 (2006) 054034
•
e-Print:
- hep-ph/0607318
•
DOI:
- 10.1103/PhysRevD.74.054034

[13]

U-boson production in e+ e- annihilations, psi and Upsilon decays, and Light Dark Matter

Pierre Fayet
(
- Ecole Normale Superieure, CNRS
)

- Phys.Rev.D 75 (2007) 115017
•
e-Print:
- hep-ph/0702176
•
DOI:
- 10.1103/PhysRevD.75.115017

[14]

Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders

- Phys.Rev.D 80 (2009) 015003
•
e-Print:
- 0903.3941
•
DOI:
- 10.1103/PhysRevD.80.015003

[15]

The Low-Energy Frontier of Particle Physics

Joerg Jaeckel
(
- Durham U., IPPP and
- Durham U.
)
,
Andreas Ringwald
(
- DESY
)

- Ann.Rev.Nucl.Part.Sci. 60 (2010) 405-437
•
e-Print:
- 1002.0329
•
DOI:
- 10.1146/annurev.nucl.012809.104433

[16]

Dark Matter from Minimal Flavor Violation

- JHEP 08 (2011) 038
•
e-Print:
- 1105.1781
•
DOI:
- 10.1007/JHEP08(2011)038

[17]

Working Group Report: New Light Weakly Coupled Particles

Rouven Essig
(
- YITP, Stony Brook
)
,
John A. Jaros
(
- SLAC
)
,
William Wester
(
- Fermilab
)
,
P. Hansson Adrian
(
- SLAC
)
,
S. Andreas
(
- DESY and
- Paris, Inst. Astrophys.
)

et al.

e-Print:
- 1311.0029

[18]

The waning of the WIMP? A review of models, searches, and constraints

Giorgio Arcadi
(
- Heidelberg, Max Planck Inst.
)
,
Maíra Dutra
(
- Orsay, LPT
)
,
Pradipta Ghosh
(
- Orsay, LPT and
- Ecole Polytechnique, CPHT
)
,
Manfred Lindner
(
- Heidelberg, Max Planck Inst.
)
,
Yann Mambrini
(
- Orsay, LPT
)

et al.

- Eur.Phys.J.C 78 (2018) 3, 203
•
e-Print:
- 1703.07364
•
DOI:
- 10.1140/epjc/s10052-018-5662-y

[19]

Secluded WIMP Dark Matter

Maxim Pospelov
(
- Victoria U. and
- Perimeter Inst. Theor. Phys.
)
,
Adam Ritz
(
- Victoria U.
)
,
Mikhail B. Voloshin
(
- Minnesota U., Theor. Phys. Inst. and
- Moscow, ITEP
)

- Phys.Lett.B 662 (2008) 53-61
•
e-Print:
- 0711.4866
•
DOI:
- 10.1016/j.physletb.2008.02.052

[20]

Probing a secluded U(1) at B factories

B. Batell
,
M. Pospelov
,
A. Ritz

- Phys.Rev.D 79 (2009) 115
•
DOI:
- 10.1103/PhysRevD.79

[21]

Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams

Wolfgang Altmannshofer
(
- Perimeter Inst. Theor. Phys.
)
,
Stefania Gori
(
- Perimeter Inst. Theor. Phys.
)
,
Maxim Pospelov
(
- Perimeter Inst. Theor. Phys. and
- Victoria U.
)
,
Itay Yavin
(
- Perimeter Inst. Theor. Phys. and
- McMaster U.
)

- Phys.Rev.Lett. 113 (2014) 091801
•
e-Print:
- 1406.2332
•
DOI:
- 10.1103/PhysRevLett.113.091801

[22]

Neutrinos and Collider Physics

Frank F. Deppisch
(
- University Coll. London
)
,
P.S. Bhupal Dev
(
- Manchester U.
)
,
Apostolos Pilaftsis
(
- Manchester U.
)

- New J.Phys. 17 (2015) 7, 075019
•
e-Print:
- 1502.06541
•
DOI:
- 10.1088/1367-2630/17/7/075019

[23]

Long-lived sterile neutrinos at Belle II in effective field theory

Guanghui Zhou
(
- Amsterdam U. and
- Nikhef, Amsterdam and
- Delta ITP, Amsterdam
)
,
Julian Y. Günther
(
- U. Bonn, Phys. Inst., BCTP and
- Bonn U.
)
,
Zeren Simon Wang
(
- Taiwan, Natl. Tsing Hua U.
)
,
Jordy de Vries
(
- Amsterdam U. and
- Nikhef, Amsterdam and
- Delta ITP, Amsterdam
)
,
Herbi K. Dreiner
(
- U. Bonn, Phys. Inst., BCTP and
- Bonn U.
)

- JHEP 04 (2022) 057
•
e-Print:
- 2111.04403
•
DOI:
- 10.1007/JHEP04(2022)057

[24]

The present and future status of heavy neutral leptons

Asli M. Abdullahi
(
- Fermilab and
- Durham U., IPPP
)
,
Pablo Barham Alzas
(
- CERN and
- Madrid, CIEMAT
)
,
Brian Batell
(
- Pittsburgh U.
)
,
James Beacham
(
- Ohio State U.
)
,
Alexey Boyarsky
(
- Leiden U.
)

et al.

- J.Phys.G 50 (2023) 2, 020501
•
e-Print:
- 2203.08039
•
DOI:
- 10.1088/1361-6471/ac98f9

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