Baryon number and lepton universality violation in leptoquark and diquark models

Assad, Nima; Fornal, Bartosz; Grinstein, Benjamín

doi:10.1016/j.physletb.2017.12.042

Title: Baryon number and lepton universality violation in leptoquark and diquark models

Journal Article · Thu Feb 01 00:00:00 EST 2018 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2017.12.042· OSTI ID:1414027

Assad, Nima;

; Grinstein, Benjamín

We perform a systematic study of models involving leptoquarks and diquarks with masses well below the grand unification scale and demonstrate that a large class of them is excluded due to rapid proton decay. After singling out the few phenomenologically viable color triplet and sextet scenarios, we show that there exist only two leptoquark models which do not suffer from tree-level proton decay and which have the potential for explaining the recently discovered anomalies in B meson decays. Both of those models, however, contain dimension five operators contributing to proton decay and require a new symmetry forbidding them to emerge at a higher scale. This has a particularly nice realization for the model with the vector leptoquark (3,1)_2/3, which points to a specific extension of the Standard Model, namely the Pati–Salam unification model, where this leptoquark naturally arises as the new gauge boson. We explore this possibility in light of recent B physics measurements. Finally, we analyze also a vector diquark model, discussing its LHC phenomenology and showing that it has nontrivial predictions for neutron–antineutron oscillation experiments.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0009919

OSTI ID:: 1414027

Alternate ID(s):: OSTI ID: 1546063

Journal Information:: Physics Letters B, Journal Name: Physics Letters B Vol. 777 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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Cited by: 150 works

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Addressing the $R_{D^{(*)}}$ anomalies with an $S_{1}$ leptoquark from SO(10) grand unification Aydemir, Ufuk; Mandal, Tanumoy; Mitra, Subhadip Physical Review D, Vol. 101, Issue 1 https://doi.org/10.1103/physrevd.101.015011	journal	January 2020
Unified SU(4) theory for the $R_{D^{()}}$ and $R_{K^{()}}$ anomalies Balaji, Shyam; Schmidt, Michael A. Physical Review D, Vol. 101, Issue 1 https://doi.org/10.1103/physrevd.101.015026	journal	January 2020
Updated $B_{s}$ -mixing constraints on new physics models for $b \to s ℓ^{+} ℓ^{-}$ anomalies Di Luzio, Luca; Kirk, Matthew; Lenz, Alexander Physical Review D, Vol. 97, Issue 9 https://doi.org/10.1103/physrevd.97.095035	journal	May 2018
Model of vector leptoquarks in view of the $B$ -physics anomalies Calibbi, Lorenzo; Crivellin, Andreas; Li, Tianjun Physical Review D, Vol. 98, Issue 11 https://doi.org/10.1103/physrevd.98.115002	journal	December 2018
Combined explanations of the $b \to s μ^{+} μ^{-}$ and $b \to c τ^{-} \bar{ν}$ anomalies: A general model analysis Kumar, Jacky; London, David; Watanabe, Ryoutaro Physical Review D, Vol. 99, Issue 1 https://doi.org/10.1103/physrevd.99.015007	journal	January 2019
$R$ -parity violating solutions to the $R_{D^{(*)}}$ anomaly and their GUT-scale unifications Hu, Quan-Yi; Li, Xin-Qiang; Muramatsu, Yu Physical Review D, Vol. 99, Issue 1 https://doi.org/10.1103/physrevd.99.015008	journal	January 2019
Left-right SU(4) vector leptoquark model for flavor anomalies Fornal, Bartosz; Gadam, Sri Aditya; Grinstein, Benjamín Physical Review D, Vol. 99, Issue 5 https://doi.org/10.1103/physrevd.99.055025	journal	March 2019
Impact of polarization observables and $B_{c} \to τ ν$ on new physics explanations of the $b \to c τ ν$ anomaly Blanke, Monika; Crivellin, Andreas; de Boer, Stefan Physical Review D, Vol. 99, Issue 7 https://doi.org/10.1103/physrevd.99.075006	journal	April 2019
Leptoquark solution for both the flavor and ANITA anomalies Chauhan, Bhavesh; Mohanty, Subhendra Physical Review D, Vol. 99, Issue 9 https://doi.org/10.1103/physrevd.99.095018	journal	May 2019
Dark Matter Interpretation of the Neutron Decay Anomaly Fornal, Bartosz; Grinstein, Benjamín Physical Review Letters, Vol. 120, Issue 19 https://doi.org/10.1103/physrevlett.120.191801	journal	May 2018
$B$ Meson Anomalies in a Pati-Salam Model within the Randall-Sundrum Background Blanke, Monika; Crivellin, Andreas Physical Review Letters, Vol. 121, Issue 1 https://doi.org/10.1103/physrevlett.121.011801	journal	July 2018
Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in $B$ Decays with a Vector Leptoquark Crivellin, Andreas; Greub, Christoph; Saturnino, Francesco Physical Review Letters, Vol. 122, Issue 1 https://doi.org/10.1103/physrevlett.122.011805	journal	January 2019
Fermionic dark matter in leptoquark portal Mandal, Rusa The European Physical Journal C, Vol. 78, Issue 9 https://doi.org/10.1140/epjc/s10052-018-6192-3	journal	September 2018
Revisiting R-parity violating interactions as an explanation of the B-physics anomalies Trifinopoulos, Sokratis The European Physical Journal C, Vol. 78, Issue 10 https://doi.org/10.1140/epjc/s10052-018-6280-4	journal	October 2018
Helicity amplitudes in $$B \rightarrow D^{*} \bar{\nu } l$$ B → D ∗ ν ¯ l decay Dai, L. R.; Oset, E. The European Physical Journal C, Vol. 78, Issue 11 https://doi.org/10.1140/epjc/s10052-018-6438-0	journal	November 2018
High- $$p_T$$ p T signatures in vector–leptoquark models Baker, Michael J.; Fuentes-Martín, Javier; Isidori, Gino The European Physical Journal C, Vol. 79, Issue 4 https://doi.org/10.1140/epjc/s10052-019-6853-x	journal	April 2019
Simplified models of flavourful leptoquarks de Medeiros Varzielas, Ivo; Talbert, Jim The European Physical Journal C, Vol. 79, Issue 6 https://doi.org/10.1140/epjc/s10052-019-7047-2	journal	June 2019
Phenomenology of an extended IDM with loop-generated fermion mass hierarchies Cárcamo Hernández, A. E.; Kovalenko, Sergey; Pasechnik, Roman The European Physical Journal C, Vol. 79, Issue 7 https://doi.org/10.1140/epjc/s10052-019-7101-0	journal	July 2019
New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ b → s ℓ + ℓ - confronts new data on lepton universality Ciuchini, Marco; Coutinho, António M.; Fedele, Marco The European Physical Journal C, Vol. 79, Issue 8 https://doi.org/10.1140/epjc/s10052-019-7210-9	journal	August 2019
Implications for new physics in $$b\rightarrow s \mu \mu $$b→sμμ transitions after recent measurements by Belle and LHCb Kowalska, Kamila; Kumar, Dinesh; Sessolo, Enrico Maria The European Physical Journal C, Vol. 79, Issue 10 https://doi.org/10.1140/epjc/s10052-019-7330-2	journal	October 2019
b → cℓν anomalies in light of extended scalar sectors Biswas, Aritra; Ghosh, Dilip Kumar; Patra, Sunando Kumar International Journal of Modern Physics A, Vol. 34, Issue 21 https://doi.org/10.1142/s0217751x19501124	journal	July 2019
Finite Family Groups for Fermionic and Leptoquark Mixing Patterns Bernigaud, Jordan; De Medeiros Varzielas, Ivo; Talbert, Jim Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02662	text	January 2019

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