We perform a model-independent global fit to all $$b \rightarrow s \ell \ell $$ data in the light of recent measurements of the lepton flavour universality violating (LFUV) observables $$R_{K_S^0}$$ , $$R_{K^{*+}}$$ , and the updated observables in $$B_s \rightarrow \phi \mu ^+ \mu ^-$$ decay, by the LHCb collaboration. Assuming NP only in the muon sector, we find that the 1D NP scenarios $$C_9^{\textrm{NP}} <0 $$ and $$C_{9}^{\textrm{NP}}=-C_{10}^{\textrm{NP}}$$ continue to be the most favoured ones. However, the significance of the favoured scenario $$C_{9}^{\textrm{NP}}=-C'_{9}$$ has reduced and the updated data now marginally prefers $$C_{10}^{\textrm{NP}} > 0$$ scenario. The 2D scenarios $$(C_9^{\textrm{NP}}, C_{10}^{\prime } )$$ , $$(C_9^{\textrm{NP}}, C_{9}^{\prime } )$$ and $$(C_9^{\textrm{NP}}, C_{10}^{\textrm{NP}} )$$ , continue to be favoured by the data in the listed order. We analyse generic TeV scale $$Z'$$ models which can generate the 1D scenarios, $$C_9^{\textrm{NP}} <0 $$ and $$C_9^{\textrm{NP}} = -C_{10}^{\textrm{NP}}$$ as well as 2D scenarios $$(C_9^{\textrm{NP}}, C_{9}^{\prime } )$$ and $$(C_9^{\textrm{NP}}, C_{10}^{\textrm{NP}} )$$ . We find that all four models provide an equally good fit to the data. We also consider a model with a 25 MeV $$Z'$$ that couples to muons only and has a $$q^2$$ dependent $$b - s$$ coupling. We study the implications of the current data on the LFUV observables $$R_{\phi }$$ , $$Q_{4,5}$$ as well as $$R_{K^{(*)}}$$ in the high $$q^2$$ . We find that the $$Q_{4,5}$$ observables have a potential to discriminate between a few favored solutions, and disentangle different heavy and light $$Z'$$ scenarios.
{
"_oai": {
"updated": "2022-12-01T00:41:32Z",
"id": "oai:repo.scoap3.org:73590",
"sets": [
"EPJC"
]
},
"authors": [
{
"affiliations": [
{
"country": "India",
"value": "Indian Institute of Technology Jodhpur, Jodhpur, 342037, India",
"organization": "Indian Institute of Technology Jodhpur"
}
],
"surname": "Alok",
"email": "akalok@iitj.ac.in",
"full_name": "Alok, Ashutosh",
"given_names": "Ashutosh"
},
{
"affiliations": [
{
"country": "India",
"value": "Indian Institute of Technology Jodhpur, Jodhpur, 342037, India",
"organization": "Indian Institute of Technology Jodhpur"
}
],
"surname": "Chundawat",
"email": "chundawat.1@iitj.ac.in",
"full_name": "Chundawat, Neetu",
"given_names": "Neetu"
},
{
"affiliations": [
{
"country": "France",
"value": "LAPTh, Universite Savoie Mont-Blanc et CNRS, Annecy, France",
"organization": "Universite Savoie Mont-Blanc et CNRS"
}
],
"surname": "Gangal",
"email": "gangal@lapth.cnrs.fr",
"full_name": "Gangal, Shireen",
"given_names": "Shireen"
},
{
"affiliations": [
{
"country": "India",
"value": "Department of Physics, University of Rajasthan, Jaipur, 302004, India",
"organization": "University of Rajasthan"
}
],
"surname": "Kumar",
"email": "dinesh@uniraj.ac.in",
"full_name": "Kumar, Dinesh",
"given_names": "Dinesh"
}
],
"titles": [
{
"source": "Springer",
"title": "A global analysis of $$b \\rightarrow s \\ell \\ell $$ <math> <mrow> <mi>b</mi> <mo>\u2192</mo> <mi>s</mi> <mi>\u2113</mi> <mi>\u2113</mi> </mrow> </math> data in heavy and light $$Z'$$ <math> <msup> <mi>Z</mi> <mo>\u2032</mo> </msup> </math> models"
}
],
"dois": [
{
"value": "10.1140/epjc/s10052-022-10816-w"
}
],
"publication_info": [
{
"page_end": "14",
"journal_title": "European Physical Journal C",
"material": "article",
"journal_volume": "82",
"artid": "s10052-022-10816-w",
"year": 2022,
"page_start": "1",
"journal_issue": "10"
}
],
"$schema": "http://repo.scoap3.org/schemas/hep.json",
"acquisition_source": {
"date": "2022-12-01T00:31:07.494354",
"source": "Springer",
"method": "Springer",
"submission_number": "4a3695fc710f11eda33ab6e03099cfc1"
},
"page_nr": [
14
],
"license": [
{
"url": "https://creativecommons.org/licenses//by/4.0",
"license": "CC-BY-4.0"
}
],
"copyright": [
{
"holder": "The Author(s)",
"year": "2022"
}
],
"control_number": "73590",
"record_creation_date": "2022-10-29T18:30:29.850075",
"_files": [
{
"checksum": "md5:0569d59247571c1be495f0c6f1d64bf6",
"filetype": "xml",
"bucket": "4b06230f-0921-4a76-9ed7-d3bebba695d7",
"version_id": "791e47d9-bb6c-4f1a-adb9-53bf944fb561",
"key": "10.1140/epjc/s10052-022-10816-w.xml",
"size": 36502
},
{
"checksum": "md5:29fa2592d45b6f7a8913b62ac7140e77",
"filetype": "pdf/a",
"bucket": "4b06230f-0921-4a76-9ed7-d3bebba695d7",
"version_id": "deb2d985-8c2c-4a6b-afee-a5271bda8ac4",
"key": "10.1140/epjc/s10052-022-10816-w_a.pdf",
"size": 1180367
}
],
"collections": [
{
"primary": "European Physical Journal C"
}
],
"abstracts": [
{
"source": "Springer",
"value": "We perform a model-independent global fit to all $$b \\rightarrow s \\ell \\ell $$ <math> <mrow> <mi>b</mi> <mo>\u2192</mo> <mi>s</mi> <mi>\u2113</mi> <mi>\u2113</mi> </mrow> </math> data in the light of recent measurements of the lepton flavour universality violating (LFUV) observables $$R_{K_S^0}$$ <math> <msub> <mi>R</mi> <msubsup> <mi>K</mi> <mi>S</mi> <mn>0</mn> </msubsup> </msub> </math> , $$R_{K^{*+}}$$ <math> <msub> <mi>R</mi> <msup> <mi>K</mi> <mrow> <mrow></mrow> <mo>\u2217</mo> <mo>+</mo> </mrow> </msup> </msub> </math> , and the updated observables in $$B_s \\rightarrow \\phi \\mu ^+ \\mu ^-$$ <math> <mrow> <msub> <mi>B</mi> <mi>s</mi> </msub> <mo>\u2192</mo> <mi>\u03d5</mi> <msup> <mi>\u03bc</mi> <mo>+</mo> </msup> <msup> <mi>\u03bc</mi> <mo>-</mo> </msup> </mrow> </math> decay, by the LHCb collaboration. Assuming NP only in the muon sector, we find that the 1D NP scenarios $$C_9^{\\textrm{NP}} <0 $$ <math> <mrow> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo><</mo> <mn>0</mn> </mrow> </math> and $$C_{9}^{\\textrm{NP}}=-C_{10}^{\\textrm{NP}}$$ <math> <mrow> <msubsup> <mi>C</mi> <mrow> <mn>9</mn> </mrow> <mtext>NP</mtext> </msubsup> <mo>=</mo> <mo>-</mo> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mtext>NP</mtext> </msubsup> </mrow> </math> continue to be the most favoured ones. However, the significance of the favoured scenario $$C_{9}^{\\textrm{NP}}=-C'_{9}$$ <math> <mrow> <msubsup> <mi>C</mi> <mrow> <mn>9</mn> </mrow> <mtext>NP</mtext> </msubsup> <mo>=</mo> <mo>-</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mo>\u2032</mo> </msubsup> </mrow> </math> has reduced and the updated data now marginally prefers $$C_{10}^{\\textrm{NP}} > 0$$ <math> <mrow> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mtext>NP</mtext> </msubsup> <mo>></mo> <mn>0</mn> </mrow> </math> scenario. The 2D scenarios $$(C_9^{\\textrm{NP}}, C_{10}^{\\prime } )$$ <math> <mrow> <mo>(</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>,</mo> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mo>\u2032</mo> </msubsup> <mo>)</mo> </mrow> </math> , $$(C_9^{\\textrm{NP}}, C_{9}^{\\prime } )$$ <math> <mrow> <mo>(</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>,</mo> <msubsup> <mi>C</mi> <mrow> <mn>9</mn> </mrow> <mo>\u2032</mo> </msubsup> <mo>)</mo> </mrow> </math> and $$(C_9^{\\textrm{NP}}, C_{10}^{\\textrm{NP}} )$$ <math> <mrow> <mo>(</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>,</mo> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mtext>NP</mtext> </msubsup> <mo>)</mo> </mrow> </math> , continue to be favoured by the data in the listed order. We analyse generic TeV scale $$Z'$$ <math> <msup> <mi>Z</mi> <mo>\u2032</mo> </msup> </math> models which can generate the 1D scenarios, $$C_9^{\\textrm{NP}} <0 $$ <math> <mrow> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo><</mo> <mn>0</mn> </mrow> </math> and $$C_9^{\\textrm{NP}} = -C_{10}^{\\textrm{NP}}$$ <math> <mrow> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>=</mo> <mo>-</mo> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mtext>NP</mtext> </msubsup> </mrow> </math> as well as 2D scenarios $$(C_9^{\\textrm{NP}}, C_{9}^{\\prime } )$$ <math> <mrow> <mo>(</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>,</mo> <msubsup> <mi>C</mi> <mrow> <mn>9</mn> </mrow> <mo>\u2032</mo> </msubsup> <mo>)</mo> </mrow> </math> and $$(C_9^{\\textrm{NP}}, C_{10}^{\\textrm{NP}} )$$ <math> <mrow> <mo>(</mo> <msubsup> <mi>C</mi> <mn>9</mn> <mtext>NP</mtext> </msubsup> <mo>,</mo> <msubsup> <mi>C</mi> <mrow> <mn>10</mn> </mrow> <mtext>NP</mtext> </msubsup> <mo>)</mo> </mrow> </math> . We find that all four models provide an equally good fit to the data. We also consider a model with a 25 MeV $$Z'$$ <math> <msup> <mi>Z</mi> <mo>\u2032</mo> </msup> </math> that couples to muons only and has a $$q^2$$ <math> <msup> <mi>q</mi> <mn>2</mn> </msup> </math> dependent $$b - s$$ <math> <mrow> <mi>b</mi> <mo>-</mo> <mi>s</mi> </mrow> </math> coupling. We study the implications of the current data on the LFUV observables $$R_{\\phi }$$ <math> <msub> <mi>R</mi> <mi>\u03d5</mi> </msub> </math> , $$Q_{4,5}$$ <math> <msub> <mi>Q</mi> <mrow> <mn>4</mn> <mo>,</mo> <mn>5</mn> </mrow> </msub> </math> as well as $$R_{K^{(*)}}$$ <math> <msub> <mi>R</mi> <msup> <mi>K</mi> <mrow> <mo>(</mo> <mrow></mrow> <mo>\u2217</mo> <mo>)</mo> </mrow> </msup> </msub> </math> in the high $$q^2$$ <math> <msup> <mi>q</mi> <mn>2</mn> </msup> </math> . We find that the $$Q_{4,5}$$ <math> <msub> <mi>Q</mi> <mrow> <mn>4</mn> <mo>,</mo> <mn>5</mn> </mrow> </msub> </math> observables have a potential to discriminate between a few favored solutions, and disentangle different heavy and light $$Z'$$ <math> <msup> <mi>Z</mi> <mo>\u2032</mo> </msup> </math> scenarios."
}
],
"imprints": [
{
"date": "2022-10-29",
"publisher": "Springer"
}
]
}