(In)direct search for SUSY at LHCb

The LHCb experiment is well adapted to indirect searches of new physics and more specifically to some SuperSymmetric signatures. In this paper, some studies performed by the LHCb collaboration on such signatures are presented, involving a

B^0_{(s)}

meson decay in rare channels like

B^0_{(s)}\rightarrow\mu^+\mu^-

and

B^0_{(s)}\rightarrow\tau^+\tau^-

processes, in radiative decays with

b\rightarrow s\gamma

transitions, or leading to a four-muon final state. The recently confirmed

\Sigma^+

decay in

p\mu^+\mu^-

is mentioned and the results of the search for an intermediate resonance are also given. Finally, some long lived and charged massive particle searches are described.

talk: Bologna 2018/06/04
p p: scattering
p p: colliding beams
particle: massive
B0: rare decay
B/s0: rare decay
B0: leptonic decay
B/s0: leptonic decay
muon: pair production
tau: pair production

References(14)

Figures(0)

[1]

LHCb Detector Performance

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Int.J.Mod.Phys.A 30 (2015) 07, 1530022
•
e-Print:
- 1412.6352
•
DOI:
- 10.1142/S0217751X15300227

[2]

Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 118 (2017) 19, 191801
•
e-Print:
- 1703.05747
•
DOI:
- 10.1103/PhysRevLett.118.191801

[3]

Probing New Physics via the $B^0_s\to \mu^+\mu^-$ Effective Lifetime

Kristof De Bruyn
(
- NIKHEF, Amsterdam
)
,
Robert Fleischer
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)
,
Robert Knegjens
(
- NIKHEF, Amsterdam
)
,
Patrick Koppenburg
(
- NIKHEF, Amsterdam
)
,
Marcel Merk
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

et al.

- Phys.Rev.Lett. 109 (2012) 041801
•
e-Print:
- 1204.1737
•
DOI:
- 10.1103/PhysRevLett.109.041801

[4]

$B_s\to\mu^+\mu^-$ as current and future probe of new physics

- JHEP 05 (2017) 076
•
e-Print:
- 1702.05498
•
DOI:
- 10.1007/JHEP05(2017)076

[5]

$B_{s,d} \to l^+ l^-$ in the Standard Model with Reduced Theoretical Uncertainty

Christoph Bobeth
(
- Munich, Tech. U.
)
,
Martin Gorbahn
(
- Liverpool U., Dept. Math. and
- Munich, Tech. U.
)
,
Thomas Hermann
(
- KIT, Karlsruhe, TTP
)
,
Mikolaj Misiak
(
- Warsaw U. and
- CERN
)
,
Emmanuel Stamou
(
- Munich, Tech. U. and
- Weizmann Inst.
)

et al.

- Phys.Rev.Lett. 112 (2014) 101801
•
e-Print:
- 1311.0903
•
DOI:
- 10.1103/PhysRevLett.112.101801

[6]

Search for the decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 118 (2017) 25, 251802
•
e-Print:
- 1703.02508
•
DOI:
- 10.1103/PhysRevLett.118.251802

[7]

Observation of Photon Polarization in the b→sγ Transition

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.Lett. 112 (2014) 16, 161801
•
e-Print:
- 1402.6852
•
DOI:
- 10.1103/PhysRevLett.112.161801

[8]

Angular analysis of the $B^{0} \to K^{*0} e^{+} e^{−}$ decay in the low-q $^{2}$ region

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- JHEP 04 (2015) 064
•
e-Print:
- 1501.03038
•
DOI:
- 10.1007/JHEP04(2015)064

[9]

First experimental study of photon polarization in radiative $B^{0}_{s}$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 118 (2017) 2, 021801,
- Phys.Rev.Lett. 118 (2017) 10, 109901 (addendum)
•
e-Print:
- 1609.02032
•
DOI:
- 10.1103/PhysRevLett.118.109901