Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field
Theoretical arguments and lattice simulations suggest that, beside the known resonance of mass <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>h</mi></m...
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MDPI AG
2023-02-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/9/2/99 |
| _version_ | 1797617906727518208 |
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| author | Maurizio Consoli Leonardo Cosmai Fabrizio Fabbri |
| author_facet | Maurizio Consoli Leonardo Cosmai Fabrizio Fabbri |
| author_sort | Maurizio Consoli |
| collection | DOAJ |
| description | Theoretical arguments and lattice simulations suggest that, beside the known resonance of mass <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>h</mi></msub><mo>=</mo></mrow></semantics></math></inline-formula> 125 GeV, the Higgs field could exhibit a second mass scale <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mo>(</mo><msub><mi>M</mi><mi>H</mi></msub><mo>)</mo></mrow><mi>theor</mi></msup><mo>=</mo><mn>690</mn><mo>±</mo><mn>10</mn><mspace width="3.33333pt"></mspace><mrow><mo>(</mo><mi>stat</mi><mo>)</mo></mrow><mo>±</mo><mn>20</mn><mspace width="3.33333pt"></mspace><mrow><mo>(</mo><mi>sys</mi><mo>)</mo></mrow><mspace width="3.33333pt"></mspace><mi>GeV</mi></mrow></semantics></math></inline-formula>. In spite of its large mass, the heavier state would couple to longitudinal Ws with the same typical strength as the low-mass state at 125 GeV and thus represent a relatively narrow resonance mainly produced at LHC by gluon–gluon fusion. After summarizing these general aspects, we review a recent analysis of LHC data which support the idea of a new resonance in the predicted mass range. Since the correlation among these measurements is very small and since, with a definite theoretical prediction in some mass region, local excesses should not be downgraded by the look-elsewhere effect, we emphasize the present substantial statistical evidence which could become an important discovery by simply adding two, still missing, key analyses of the full RUN2 statistics. |
| first_indexed | 2024-03-11T08:02:39Z |
| format | Article |
| id | doaj.art-3be0a873e972486c8560c5cd58d4b19b |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-11T08:02:39Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-3be0a873e972486c8560c5cd58d4b19b2023-11-16T23:40:55ZengMDPI AGUniverse2218-19972023-02-01929910.3390/universe9020099Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs FieldMaurizio Consoli0Leonardo Cosmai1Fabrizio Fabbri2Istituto Nazionale di Fisica Nucleare—Sezione di Catania, 95129 Catania, ItalyIstituto Nazionale di Fisica Nucleare—Sezione di Bari, 70126 Bari, ItalyIstituto Nazionale di Fisica Nucleare—Sezione di Bologna, 40127 Bologna, ItalyTheoretical arguments and lattice simulations suggest that, beside the known resonance of mass <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>h</mi></msub><mo>=</mo></mrow></semantics></math></inline-formula> 125 GeV, the Higgs field could exhibit a second mass scale <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mo>(</mo><msub><mi>M</mi><mi>H</mi></msub><mo>)</mo></mrow><mi>theor</mi></msup><mo>=</mo><mn>690</mn><mo>±</mo><mn>10</mn><mspace width="3.33333pt"></mspace><mrow><mo>(</mo><mi>stat</mi><mo>)</mo></mrow><mo>±</mo><mn>20</mn><mspace width="3.33333pt"></mspace><mrow><mo>(</mo><mi>sys</mi><mo>)</mo></mrow><mspace width="3.33333pt"></mspace><mi>GeV</mi></mrow></semantics></math></inline-formula>. In spite of its large mass, the heavier state would couple to longitudinal Ws with the same typical strength as the low-mass state at 125 GeV and thus represent a relatively narrow resonance mainly produced at LHC by gluon–gluon fusion. After summarizing these general aspects, we review a recent analysis of LHC data which support the idea of a new resonance in the predicted mass range. Since the correlation among these measurements is very small and since, with a definite theoretical prediction in some mass region, local excesses should not be downgraded by the look-elsewhere effect, we emphasize the present substantial statistical evidence which could become an important discovery by simply adding two, still missing, key analyses of the full RUN2 statistics.https://www.mdpi.com/2218-1997/9/2/99spontaneous symmetry breakingBEH field mass spectrumLHC experiments |
| spellingShingle | Maurizio Consoli Leonardo Cosmai Fabrizio Fabbri Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field Universe spontaneous symmetry breaking BEH field mass spectrum LHC experiments |
| title | Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field |
| title_full | Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field |
| title_fullStr | Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field |
| title_full_unstemmed | Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field |
| title_short | Theoretical Arguments and Experimental Signals for a Second Resonance of the Higgs Field |
| title_sort | theoretical arguments and experimental signals for a second resonance of the higgs field |
| topic | spontaneous symmetry breaking BEH field mass spectrum LHC experiments |
| url | https://www.mdpi.com/2218-1997/9/2/99 |
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