# Publications of the Rare Decays Working Group

## Searches for and studies of non-hadronic decays of flavoured particles (except charm), including Fully leptonic decays: $B_{(s)} \to \mu\mu$, $B_{s} \to \tau\tau$, $B \to \mu\mu\mu\mu$ Electroweak penguin decays: $B \to K^{\ast 0}\mu\mu$, $B \to K^{\ast 0}ee$, $\Lambda_b \to \Lambda\mu\mu$, $B \to K\mu\mu$, $B \to \pi\mu\mu$, (and similar with $\phi$, $K_1$, $\rho$, etc.) Radiative decays: $B \to K^{\ast}\gamma$, $B_s \to \phi\gamma$, $\Lambda_b \to \Lambda^{(\ast)}\gamma$, $B \to K_1\gamma$, $B \to \rho\gamma$ Lepton flavour violation: $\tau \to \mu\mu\mu$, $B \to \tau\mu$, $\Upsilon \to e\mu$ Lepton number violation: $\tau \to p\mu\mu$, $\tau\to \mu\pi\pi$, $B\to K\mu\mu$, $B \to \pi\mu\mu$, $B\to D^{(\ast)}\mu\mu$ (same sign muons) Decays of light flavoured particles, such as $K^0_S \to \mu\mu$ and hyperon decays (including exotic signals)

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## List of papers (Total of 72 papers and 8141 citations) [plot]

### Cited

Search for the lepton-flavour violating decays $\mathcal{B}(B^+ \to K^+ {\mu}^{\pm} e^{\mp})$ PAPER-2019-022
arXiv:1909.01010 [PDF]
PRL 03 Sep 2019 1
Search for the lepton-flavour-violating decays $B^{0}_{s}\to\tau^{\pm}\mu^{\mp}$ and $B^{0}\to\tau^{\pm}\mu^{\mp}$ PAPER-2019-016
arXiv:1905.06614 [PDF]
PRL 16 May 2019 6 [plot]
Measurement of $CP$-violating and mixing-induced observables in $B_s^0 \to \phi\gamma$ decays PAPER-2019-015
arXiv:1905.06284 [PDF]
Phys. Rev. Lett. 123 (2019) 081802 15 May 2019 2 [plot]
First observation of the radiative decay $\Lambda_{b}^{0} \to \Lambda \gamma$ PAPER-2019-010
arXiv:1904.06697 [PDF]
Phys. Rev. Lett. 123 (2019) 031801 14 Apr 2019 3 [plot]
Search for lepton-universality violation in $B^+\to K^+\ell^+\ell^-$ decays PAPER-2019-009
arXiv:1903.09252 [PDF]
Phys. Rev. Lett. 122 (2019) 191801 21 Mar 2019 84 [plot]
Angular moments of the decay $\Lambda_b^0 \rightarrow \Lambda \mu^{+} \mu^{-}$ at low hadronic recoil PAPER-2018-029
arXiv:1808.00264 [PDF]
JHEP 09 (2018) 146 01 Aug 2018 15 [plot]
Evidence for the decay $B_{s}^0 \rightarrow \overline{K}{}^{*0}\mu^+\mu^-$ PAPER-2018-004
arXiv:1804.07167 [PDF]
JHEP 07 (2018) 020 19 Apr 2018 11 [plot]
Evidence for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$ PAPER-2017-049
arXiv:1712.08606 [PDF]
Phys. Rev. Lett. 120 (2018) 221803 22 Dec 2017 12 [plot]
Search for the rare decay $\Lambda_{c}^{+} \to p\mu^+\mu^-$ PAPER-2017-039
arXiv:1712.07938 [PDF]
Phys. Rev. D 97, 091101 21 Dec 2017 15 [plot]
Search for the lepton-flavour violating decays $B^0_{(s)} \rightarrow e^\pm \mu^\mp$ PAPER-2017-031
arXiv:1710.04111 [PDF]
JHEP 03 (2018) 078 11 Oct 2017 21 [plot]
Observation of $D^0$ meson decays to $\pi^+\pi^-\mu^+\mu^-$ and $K^+K^-\mu^+\mu^-$ final states PAPER-2017-019
arXiv:1707.08377 [PDF]
Phys. Rev. Lett. 119 (2017) 181805 26 Jul 2017 19 [plot]
Improved limit on the branching fraction of the rare decay $K^0_{\scriptscriptstyle S}\to\mu^+\mu^-$ PAPER-2017-009
arXiv:1706.00758 [PDF]
Eur. Phys. J. C77 (2017) 678 02 Jun 2017 18 [plot]
Test of lepton universality with $B^{0} \rightarrow K^{*0}\ell^{+}\ell^{-}$ decays PAPER-2017-013
arXiv:1705.05802 [PDF]
JHEP 08 (2017) 055 16 May 2017 489 [plot]
Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays PAPER-2017-001
arXiv:1703.05747 [PDF]
Phys. Rev. Lett. 118 (2017) 191801 16 Mar 2017 184 [plot]
Search for the decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$ PAPER-2017-003
arXiv:1703.02508 [PDF]
Phys. Rev. Lett. 118 (2017) 251802 07 Mar 2017 62 [plot]
Observation of the decay $\Lambda^0_b \to p K^- \mu^+ \mu^-$ and a search for $C P$ violation PAPER-2016-059
arXiv:1703.00256 [PDF]
JHEP 06 (2017) 108 01 Mar 2017 19 [plot]
Observation of the suppressed decay $\Lambda^{0}_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$ PAPER-2016-049
arXiv:1701.08705 [PDF]
JHEP 04 (2017) 029 30 Jan 2017 22 [plot]
Search for long-lived scalar particles in $B^+ \to K^+ \chi (\mu^+\mu^-)$ decays PAPER-2016-052
arXiv:1612.07818 [PDF]
Phys. Rev. D95 (2017) 071101 22 Dec 2016 44 [plot]
Measurement of the phase difference between short- and long-distance amplitudes in the $B^{+}\to K^{+}\mu^{+}\mu^{-}$ decay PAPER-2016-045
arXiv:1612.06764 [PDF]
Eur. Phys. J. C77 (2017) 161 20 Dec 2016 46 [plot]
Search for decays of neutral beauty mesons into four muons PAPER-2016-043
arXiv:1611.07704 [PDF]
JHEP 03 (2017) 001 23 Nov 2016 9 [plot]
Search for the $C P$-violating strong decays $\eta \to \pi^+\pi^-$ and $\eta^\prime(958) \to \pi^+\pi^-$ PAPER-2016-046
arXiv:1610.03666 [PDF]
Phys. Lett. B764 (2016) 233 12 Oct 2016 9 [plot]
Differential branching fraction and angular moments analysis of the decay $B^0 \to K^+ \pi^- \mu^+ \mu^-$ in the $K^*_{0,2}(1430)^0$ region PAPER-2016-025
arXiv:1609.04736 [PDF]
JHEP 12 (2016) 065 15 Sep 2016 16 [plot]
First experimental study of photon polarization in radiative $B^{0}_{s}$ decays PAPER-2016-034
arXiv:1609.02032 [PDF]
Phys. Rev. Lett. 118 (2017) 021801 07 Sep 2016 31 [plot]
Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction PAPER-2016-012
arXiv:1606.04731 [PDF]
JHEP 11 (2016) 047, JHEP 04 (2017) 142 15 Jun 2016 106 [plot]
Angular analysis of the $B^{0}\rightarrow K^{*0}\mu^{+}\mu^{-}$ decay using 3 fb$^{-1}$ of integrated luminosity PAPER-2015-051
arXiv:1512.04442 [PDF]
JHEP 02 (2016) 104 14 Dec 2015 505 [plot]
Search for the lepton-flavour violating decay $D^0 \to e^\pm\mu^\mp$ PAPER-2015-048
arXiv:1512.00322 [PDF]
Phys. Lett. B754 (2016) 167 01 Dec 2015 29 [plot]
First observation of the decay $D^{0}\rightarrow K^{-}\pi^{+}\mu^{+}\mu^{-}$ in the $\rho^{0}$-$\omega$ region of the dimuon mass spectrum PAPER-2015-043
arXiv:1510.08367 [PDF]
Phys. Lett. B757 (2016) 558 28 Oct 2015 23 [plot]
Search for the rare decays $B^{0}\to J/\psi \gamma$ and $B^{0}_{s} \to J/\psi \gamma$ PAPER-2015-044
arXiv:1510.04866 [PDF]
Phys. Rev. D92 (2015) 112002 16 Oct 2015 11 [plot]
First measurement of the differential branching fraction and $C P$ asymmetry of the $B^\pm\to\pi^\pm\mu^+\mu^-$ decay PAPER-2015-035
arXiv:1509.00414 [PDF]
JHEP 10 (2015) 034 01 Sep 2015 52 [plot]
Search for hidden-sector bosons in $B^0 \to K^{*0}\mu^+\mu^-$ decays PAPER-2015-036
arXiv:1508.04094 [PDF]
Phys. Rev. Lett. 115 (2015) 161802 17 Aug 2015 77 [plot]
Angular analysis and differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ PAPER-2015-023
arXiv:1506.08777 [PDF]
JHEP 09 (2015) 179 29 Jun 2015 280 [plot]
Differential branching fraction and angular analysis of $\Lambda^{0}_{b} \rightarrow \Lambda \mu^+\mu^-$ decays PAPER-2015-009
arXiv:1503.07138 [PDF]
JHEP 06 (2015) 115, JHEP 09 (2018) 145 24 Mar 2015 103 [plot]
Angular analysis of the $B^0 \rightarrow K^{*0} e^+ e^-$ decay in the low-$q^2$ region PAPER-2014-066
arXiv:1501.03038 [PDF]
JHEP 04 (2015) 064 13 Jan 2015 80 [plot]
Study of the rare $B_s^0$ and $B^0$ decays into the $\pi^+\pi^-\mu^+\mu^-$ final state PAPER-2014-063
arXiv:1412.6433 [PDF]
Phys. Lett. B743 (2015) 46 19 Dec 2014 19 [plot]
Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data PAPER-2014-049
arXiv:1411.4413 [PDF]
Nature 522 (2015) 68 17 Nov 2014 475 [plot]
Search for the lepton flavour violating decay $\tau^-\to \mu^-\mu^+\mu^-$ PAPER-2014-052
arXiv:1409.8548 [PDF]
JHEP 02 (2015) 121 30 Sep 2014 64 [plot]
First observations of the rare decays $B^+ \rightarrow K^+\pi^+\pi^-\mu^+\mu^-$ and $B^+ \rightarrow\phi K^+\mu^+\mu^-$ PAPER-2014-030
arXiv:1408.1137 [PDF]
JHEP 10 (2014) 064 05 Aug 2014 13 [plot]
Measurement of $C P$ asymmetries in the decays $B^0 \rightarrow K^{*0} \mu^+ \mu^-$ and $B^+ \rightarrow K^{+} \mu^+ \mu^-$ PAPER-2014-032
arXiv:1408.0978 [PDF]
JHEP 09 (2014) 177 05 Aug 2014 37 [plot]
Test of lepton universality using $B^{+}\rightarrow K^{+}\ell^{+}\ell^{-}$ decays PAPER-2014-024
arXiv:1406.6482 [PDF]
Phys. Rev. Lett. 113 (2014) 151601 25 Jun 2014 874 [plot]
Angular analysis of charged and neutral $B \to K \mu^+\mu^-$ decays PAPER-2014-007
arXiv:1403.8045 [PDF]
JHEP 05 (2014) 082 31 Mar 2014 42 [plot]
Differential branching fractions and isospin asymmetries of $B \to K^{(*)}\mu^+\mu^+$ decays PAPER-2014-006
arXiv:1403.8044 [PDF]
JHEP 06 (2014) 133 31 Mar 2014 296 [plot]
Observation of photon polarization in the $b \to s\gamma$ transition PAPER-2014-001
arXiv:1402.6852 [PDF]
Phys. Rev. Lett. 112 (2014) 161801 27 Feb 2014 60 [plot]
Search for Majorana neutrinos in $B^- \to \pi^+\mu^-\mu^-$ decays PAPER-2013-064
arXiv:1401.5361 [PDF]
Phys. Rev. Lett. 112 (2014) 131802 21 Jan 2014 105 [plot]
Search for the decay $D^0\to\pi^+\pi^-\mu^+\mu^-$ PAPER-2013-050
arXiv:1310.2535 [PDF]
Phys. Lett. B728 (2014) 234 09 Oct 2013 20 [plot]
Measurement of form-factor independent observables in the decay $B^{0} \to K^{*0} \mu^+ \mu^-$ PAPER-2013-037
arXiv:1308.1707 [PDF]
Phys. Rev. Lett. 111 (2013) 191801 07 Aug 2013 536 [plot]
Measurement of the $C P$ asymmetry in $B^+ \rightarrow K^+ \mu^+ \mu^-$ decays PAPER-2013-043
arXiv:1308.1340 [PDF]
Phys. Rev. Lett. 111 (2013) 151801 06 Aug 2013 14 [plot]
Observation of a resonance in $B^+ \to K^+ \mu^+\mu^-$ decays at low recoil PAPER-2013-039
arXiv:1307.7595 [PDF]
Phys. Rev. Lett. 111 (2013) 112003 29 Jul 2013 64 [plot]
Measurement of the $B^0_s \to \mu^+ \mu^-$ branching fraction and search for $B^0 \to \mu^+ \mu^-$ decays at the LHCb experiment PAPER-2013-046
arXiv:1307.5024 [PDF]
Phys. Rev. Lett. 111 (2013) 101805 18 Jul 2013 402 [plot]
Search for the lepton-flavor violating decays $B^0_s \rightarrow e^{\pm}\mu^{\mp}$ and $B^0 \rightarrow e^{\pm} \mu^{\mp}$ PAPER-2013-030
arXiv:1307.4889 [PDF]
Phys. Rev. Lett. 111 (2013) 141801 18 Jul 2013 50 [plot]
Measurement of the differential branching fraction of the decay $\Lambda_b^0 \rightarrow \Lambda\mu^+\mu^-$ PAPER-2013-025
arXiv:1306.2577 [PDF]
Phys. Lett. B725 (2013) 25 11 Jun 2013 46 [plot]
Search for the rare decay $D^0 \to \mu^+ \mu^-$ PAPER-2013-013
arXiv:1305.5059 [PDF]
Phys. Lett. B725 (2013) 16 22 May 2013 58 [plot]
Differential branching fraction and angular analysis of the decay $B_s^0 \to \phi \mu^+\mu^-$ PAPER-2013-017
arXiv:1305.2168 [PDF]
JHEP 07 (2013) 84 09 May 2013 154 [plot]
Search for $D^{+}_{(s)} \rightarrow \pi^{+} \mu^{+} \mu^{-}$ and $D^{+}_{(s)} \rightarrow \pi^{-} \mu^{+} \mu^{+}$ decays PAPER-2012-051
arXiv:1304.6365 [PDF]
Phys. Lett. B724 (2013) 203 23 Apr 2013 68 [plot]
Differential branching fraction and angular analysis of the decay $B^{0} \rightarrow K^{*0} \mu^{+}\mu^{-}$ PAPER-2013-019
arXiv:1304.6325 [PDF]
JHEP 08 (2013) 131 23 Apr 2013 236 [plot]
Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb PAPER-2013-014
arXiv:1304.4518 [PDF]
Phys. Lett. B724 (2013) 36 16 Apr 2013 65 [plot]
Measurement of the $B^0 \to K^{*0}e^+e^-$ branching fraction at low dilepton mass PAPER-2013-005
arXiv:1304.3035 [PDF]
JHEP 05 (2013) 159 10 Apr 2013 43 [plot]
Search for rare $B^0_{(s)}\rightarrow \mu^+ \mu^- \mu^+ \mu^-$ decays PAPER-2012-049
arXiv:1303.1092 [PDF]
Phys. Rev. Lett. 110 (2013) 211801 05 Mar 2013 24 [plot]
First Evidence for the Decay $B^0_s \to \mu^+\mu^-$ PAPER-2012-043
arXiv:1211.2674 [PDF]
Phys. Rev. Lett. 110 (2013) 021801 12 Nov 2012 485 [plot]
Measurement of the $C P$ asymmetry in $B^0 \to K^{*0} \mu^+ \mu^-$ decays PAPER-2012-021
arXiv:1210.4492 [PDF]
Phys. Rev. Lett. 110 (2013) 031801 16 Oct 2012 40 [plot]
First observation of the decay $B^+ \to \pi^+ \mu^+\mu^-$ PAPER-2012-020
arXiv:1210.2645 [PDF]
JHEP 12 (2012) 125 09 Oct 2012 81 [plot]
Differential branching fraction and angular analysis of the $B^+ \to K^+ \mu^+ \mu^-$ decay PAPER-2012-024
arXiv:1209.4284 [PDF]
JHEP 02 (2013) 105 19 Sep 2012 104 [plot]
Search for the rare decay $K_{\rm\scriptscriptstyle S}^0\rightarrow\mu^{+}\mu^{-}$ PAPER-2012-023
arXiv:1209.4029 [PDF]
JHEP 01 (2013) 90 18 Sep 2012 47 [plot]
Measurement of the ratio of branching fractions $B(B^0 \to K^{\ast 0} \gamma) / B(B^0_s \to \phi \gamma)$ and the direct $C P$ asymmetry in $B^0 \to K^{\ast 0} \gamma$ PAPER-2012-019
arXiv:1209.0313 [PDF]
Nucl. Phys. B867 (2013) 1 03 Sep 2012 73 [plot]
Implications of LHCb measurements and future prospects PAPER-2012-031
arXiv:1208.3355 [PDF]
Eur. Phys. J. C73 (2013) 2373 16 Aug 2012 290 [plot]
Measurement of the isospin asymmetry in $B \to K^{(*)}\mu^+ \mu^-$ decays PAPER-2012-011
arXiv:1205.3422 [PDF]
JHEP 07 (2012) 133 15 May 2012 108 [plot]
Strong constraints on the rare decays $B^0_s \to \mu^+ \mu^-$ and $B^0 \to \mu^+ \mu^-$ PAPER-2012-007
arXiv:1203.4493 [PDF]
Phys. Rev. Lett. 108 (2012) 231801 20 Mar 2012 283 [plot]
Measurement of the ratio of branching fractions ${\cal B}(B^0 \to K^{\ast 0} \gamma)/{\cal B}(B^0_s \to \phi \gamma)$ PAPER-2011-042
arXiv:1202.6267 [PDF]
Phys. Rev. D85 (2012) 112013 28 Feb 2012 31 [plot]
Searches for Majorana neutrinos in $B^-$ decays PAPER-2011-038
arXiv:1201.5600 [PDF]
Phys. Rev. D85 (2012) 112004 26 Jan 2012 89 [plot]
Differential branching fraction and angular analysis of the decay $B^{0} \rightarrow K^{*0} \mu^+ \mu^-$ PAPER-2011-020
arXiv:1112.3515 [PDF]
Phys. Rev. Lett. 108 (2012) 181806 15 Dec 2011 90 [plot]
Search for the rare decays $B^0_s \to \mu^+\mu^-$ and $B^0 \to \mu^+\mu^-$ PAPER-2011-025
arXiv:1112.1600 [PDF]
Phys. Lett. B708 (2012) 55 07 Dec 2011 69 [plot]
Search for the lepton number violating decays $B^{+}\rightarrow \pi^- \mu^+ \mu^+$ and $B^{+}\rightarrow K^- \mu^+ \mu^+$ PAPER-2011-009
arXiv:1110.0730 [PDF]
Phys. Rev. Lett. 108 (2012) 101601 04 Oct 2011 55 [plot]
Search for the rare decays $B^{0}_{s} \to \mu^{+} \mu^{-}$ and $B^{0} \to \mu^{+} \mu^{-}$ PAPER-2011-004
arXiv:1103.2465 [PDF]
Phys. Lett. B699 (2011) 330 12 Mar 2011 127 [plot]

## List of conference notes (Total of 2 conference notes and 3 citations) [plot]

### Cited

Strong constraints on the $K^0_s \to \mu^+ \mu^-$ branching fraction CONF-2019-002 16 Sep 2019 1
LHCb dimuon and charm mass distributions CONF-2016-005 19 Jul 2016 2 [plot]

Created on 21 October 2019.Citation count from INSPIRE on 21 October 2019.