Recent questions tagged beyond-the-standard-model

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Recent questions tagged beyond-the-standard-model

Use this tag for questions beyond the standard laws of physics (General Relativity and the Standard Model) if a more specific tag, like string-theory, loop-quantum-gravity, supersymmetry, etc. do not apply.

Beyond the Standard Model (BSM) physics has often been criticised as "speculative", but it is generally accepted that the Standard Model cannot be a theory-of-everything as it does not incorporate gravity, etc. Other reasons why BSM physics is required include:

The Standard Model is perturbatively done.
The Standard Model has a large number of free parameters.
The Standard Model is a man-made theory, which means it was constructed to match experimental data. It has thus, little predictive power compared to a theory-of-everything.
The Standard Model does not describe gravity.

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+ 1 like - 0 dislike

0 answers 669 views

Randall–Sundrum graviton and experimental bounds

asked Apr 14, 2021 in Theoretical Physics by wonderich (1,500 points)

+ 5 like - 0 dislike

1 answer 710 views

Adjusting the rate of proton decay in the standard $\rm SU(5)$ grand unified theory

asked Nov 23, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

1 answer 957 views

Horizontal Gauge Symmetry?

asked Jul 28, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 3 like - 0 dislike

0 answers 502 views

$ (5^* \times 5^*)_{asym}={10}$ in A. Zee's book p.409 versus PDG Sec.114

asked Jul 25, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 2 like - 0 dislike

0 answers 1179 views

Georgi statements about the symmetry breaking of $\rm SO(10)$

asked Jul 25, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 2 like - 0 dislike

0 answers 475 views

$\rm SO(10)$ grand unified model restores the parity symmetry lost in $\rm SU(5)$ model

asked Jul 21, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

0 answers 597 views

Parity $P$ symmetry restored by 1 in the $1 \oplus \bar{5} \oplus 10$?

asked Jul 20, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 2 like - 0 dislike

0 answers 656 views

How to give left-handed neutrinos alone Majorana mass?

asked Jul 19, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

0 answers 441 views

Light composite fermion as a bound state formed by $SU(4)$ gauge force attractions

asked Jul 19, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 0 like - 0 dislike

0 answers 604 views

Breaking/Tumbling gauge theory and composite fermions

asked Jul 18, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 0 like - 0 dislike

0 answers 1035 views

Quark mass vs Lepton mass $m_d/m_e$

asked Jul 17, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 3 like - 0 dislike

1 answer 804 views

Elegant theoretical way(s) to prove the $U(1)$ electric charge of electron + proton $Q_e+Q_p=0$?

asked Jul 16, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

1 answer 1124 views

Monopole problem: 't Hooft–Polyakov, Big Bang theory versus Cosmic inflation

asked Jul 15, 2020 in Astronomy by annie marie heart (1,205 points)

+ 3 like - 0 dislike

0 answers 428 views

$SU(5)$ model and flipped $SU(5)$ model

asked Jul 11, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 3 like - 0 dislike

0 answers 1020 views

Lectures by Susskind versus Zee on the ${\rm SU}(5)$ grand unified theory notations

asked Jul 4, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

0 answers 715 views

B-L global symmetry in the grand unification theories

asked Apr 14, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 2 like - 0 dislike

1 answer 5330 views

$B$-$L$ global symmetry in the grand unification theories

asked Apr 14, 2020 in Theoretical Physics by annie marie heart (1,205 points)

+ 1 like - 0 dislike

0 answers 617 views

Why are compressed mass spectra associated with soft decay products?

asked Nov 30, 2019 in Phenomenology by AChrys (5 points)

+ 0 like - 0 dislike

1 answer 1720 views

How can we test a theory of everything?

asked Nov 19, 2019 in Chat by anonymous

+ 4 like - 0 dislike

1 answer 659 views

U(1) Dirac string moved to the SU(2) or SO(3) gauge theory

asked Jul 23, 2018 in Theoretical Physics by annie marie heart (1,205 points)

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Recent questions tagged beyond-the-standard-model