A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery

The ATLAS collaboration
Nature 607 (2022) 52-59, 2022.

Abstract
The Standard Model of particle physics describes the known fundamental particles and forces that make up our universe, with the exception of gravity. One of the central features of the Standard Model is a field that permeates all of space and interacts with fundamental particles. The quantum excitation of this field, known as Higgs field, manifests itself as the Higgs boson, the only fundamental particle with no spin. In 2012, a particle with properties consistent with the Higgs boson of the Standard Model was observed by the ATLAS and CMS experiments at the Large Hadron Collider at CERN. Since then, more than 30 times as many Higgs bosons have been recorded by the ATLAS experiment, allowing much more precise measurements and new tests of the theory. Here, on the basis of this larger dataset, we combine an unprecedented number of production and decay processes of the Higgs boson to scrutinize its interactions with elementary particles. Interactions with gluons, photons, and $W$ and $Z$ bosons -- the carriers of the strong, electromagnetic, and weak forces -- are studied in detail. Interactions with three third-generation matter particles (bottom ($b$) and top ($t$) quarks, and tau leptons ($\tau$)) are well measured and indications of interactions with a second-generation particle (muons, $\mu$) are emerging. These tests reveal that the Higgs boson discovered ten years ago is remarkably consistent with the predictions of the theory and provide stringent constraints on many models of new phenomena beyond the Standard Model.

  • Figure 2a

    Data from Figure 2a

    10.17182/hepdata.130266.v1/t1

    Observed and predicted cross sections for different Higgs boson production processes, measured assuming SM values for the decay branching fractions....

  • Figure 2b

    Data from Figure 2b

    10.17182/hepdata.130266.v1/t2

    Observed and predicted branching fractions for different Higgs boson decay modes measured assuming SM values for the production cross sections....

  • Figure 3

    Data from Figure 3

    10.17182/hepdata.130266.v1/t3

    Ratio of observed rate to predicted SM event rate for different combinations of Higgs boson production and decay processes. The...

  • Figure 4

    Data from Figure 4

    10.17182/hepdata.130266.v1/t4

    Negative log-likelihood contours corresponding to 68% and 95% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane obtained from a combined fit, assuming...

  • Figure 5 without $\kappa_{c}$

    Data from Figure 5

    10.17182/hepdata.130266.v1/t5

    Reduced coupling strength modifiers $\kappa_{F}\cdot m_{F}/\text{vev}$ for fermions ($F=t,\,b,\,\tau,\,\mu$) and $\sqrt{\kappa_{V}}\cdot m_{V}/\text{vev}$ for vector bosons as a function of their...

  • Figure 5 with $\kappa_{c}$

    Data from Figure 5

    10.17182/hepdata.130266.v1/t6

    Reduced coupling strength modifiers $\kappa_{F}\cdot m_{F}/\text{vev}$ for fermions ($F=t,\,b,\,\tau,\,\mu$) and $\sqrt{\kappa_{V}}\cdot m_{V}/\text{vev}$ for vector bosons as a function of their...

  • Figure 6 $\kappa$

    Data from Figure 6

    10.17182/hepdata.130266.v1/t7

    Reduced coupling strength modifiers and their uncertainties per particle type with effective photon, $Z\gamma$ and gluon couplings. The scenario where...

  • Figure 6 BSM

    Data from Figure 6

    10.17182/hepdata.130266.v1/t8

    Reduced coupling strength modifiers and their uncertainties per particle type with effective photon, $Z\gamma$ and gluon couplings. The scenario where...

  • Figure 7

    Data from Figure 7

    10.17182/hepdata.130266.v1/t9

    Observed and predicted Higgs boson production cross sections in different kinematic regions. The $p$-value for compatibility of the combined measurement...

  • Aux Figure 8 (Total)

    Data from Auxiliary Figure 8

    10.17182/hepdata.130266.v1/t10

    Observed variations of −2 ln $\Lambda(\mu)$ as a function of $\mu$ with all systematic uncertainties included.

  • Aux Figure 8 (Remove Background Theory)

    Data from Auxiliary Figure 8

    10.17182/hepdata.130266.v1/t11

    Observed variations of −2 ln $\Lambda(\mu)$ as a function of $\mu$ with with parameters describing theory uncertainties in background processes...

  • Aux Figure 8 (Remove Signal Theory)

    Data from Auxiliary Figure 8

    10.17182/hepdata.130266.v1/t12

    Observed variations of −2 ln $\Lambda(\mu)$ as a function of $\mu$ with parameters describing theory uncertainties in background and signal...

  • Aux Figure 8 (Statistical)

    Data from Auxiliary Figure 8

    10.17182/hepdata.130266.v1/t13

    Observed variations of −2 ln $\Lambda(\mu)$ as a function of $\mu$ with all systematic uncertainties fixed to their best-fit values.

  • Aux Figure 9

    Data from Auxiliary Figure 9

    10.17182/hepdata.130266.v1/t14

    Cross sections for ggF, VBF, $WH$, $ZH$, $t\bar{t}H$ and $tH$ production modes. The cross sections are normalized to their SM...

  • Aux Figure 10a

    Data from Auxiliary Figure 10a

    10.17182/hepdata.130266.v1/t15

    Correlation matrix from the measurement of ggF, VBF, $WH$, $ZH$, $ttH$ and $tH$ production cross sections without theory uncertainties.

  • Aux Figure 10b

    Data from Auxiliary Figure 10b

    10.17182/hepdata.130266.v1/t16

    Correlation matrix from the measurement of ggF, VBF, $WH$, $ZH$, $ttH$ and $tH$ production cross sections with the theory uncertainties.

  • Aux Figure 11a

    Data from Auxiliary Figure 11a

    10.17182/hepdata.130266.v1/t17

    Cross sections for ggF, VBF, $WH$, $ZH$, $t\bar{t}H+tH$ production modes, obtained without including the theory uncertainties on the predicted SM...

  • Aux Figure 11b

    Data from Auxiliary Figure 11b

    10.17182/hepdata.130266.v1/t18

    Correlation matrix from the measurement of ggF, VBF, $WH$, $ZH$, $ttH+tH$ production cross sections without theory uncertainties.

  • Aux Figure 12

    Data from Auxiliary Figure 12

    10.17182/hepdata.130266.v1/t19

    Correlation matrix from the measurement of the branching fractions, assuming SM values for the decay production cross sections and no...

  • Aux Figure 14

    Data from Auxiliary Figure 14

    10.17182/hepdata.130266.v1/t20

    Correlation matrix from the measured values of the production cross sections times branching fractions of the Higgs boson, for the...

  • Aux Figure 15

    Data from Auxiliary Figure 15

    10.17182/hepdata.130266.v1/t21

    Observed correlation matrix from the fit of $\kappa_{V}$ and $\kappa_{F}$ coupling modifiers. No contributions from non-SM invisible and undetected Higgs...

  • Aux Figure 16 (1)

    Data from Auxiliary Figure 16

    10.17182/hepdata.130266.v1/t22

    Negative log-likelihood contour corresponding to 68% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane, corresponding to $H\to\gamma\gamma$ decay, obtained from a combined...

  • Aux Figure 16 (2)

    Data from Auxiliary Figure 16

    10.17182/hepdata.130266.v1/t23

    Negative log-likelihood contour corresponding to 68% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane, corresponding to $H\to ZZ$ decay, obtained from a...

  • Aux Figure 16 (3)

    Data from Auxiliary Figure 16

    10.17182/hepdata.130266.v1/t24

    Negative log-likelihood contour corresponding to 68% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane, corresponding to $H\to\tau\tau$ decay, obtained from a combined...

  • Aux Figure 16 (4)

    Data from Auxiliary Figure 16

    10.17182/hepdata.130266.v1/t25

    Negative log-likelihood contour corresponding to 68% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane, corresponding to $H\to WW$ decay, obtained from a...

  • Aux Figure 16 (5)

    Data from Auxiliary Figure 16

    10.17182/hepdata.130266.v1/t26

    Negative log-likelihood contour corresponding to 68% CL in the ($\kappa_{V}$, $\kappa_{F}$) plane, corresponding to $H\to bb$ decay, obtained from a...

  • Aux Figure 17

    Data from Auxiliary Figure 17

    10.17182/hepdata.130266.v1/t27

    Observed correlation matrix from the fit of $\kappa_{Z}$, $\kappa_{W}$, $\kappa_{b}$, $\kappa_{t}$, $\kappa_{\tau}$ and $\kappa_{\mu}$ coupling modifiers with $\kappa_{c}$ = $\kappa_{t}$...

  • Aux Figure 18

    Data from Auxiliary Figure 18

    10.17182/hepdata.130266.v1/t28

    Observed correlation matrix from the fit of the $\kappa_{Z}$, $\kappa_{W}$, $\kappa_{b}$, $\kappa_{t}$, $\kappa_{\tau}$, $\kappa_{\mu}$ and effective photon, $Z \gamma$ and...

  • Aux Figure 19 $\kappa$

    Data from Auxiliary Figure 19

    10.17182/hepdata.130266.v1/t29

    Coupling-strength modifiers and their uncertainties for the effective photon, $Z\gamma$ and gluon couplings as free parameters and all other coupling...

  • Aux Figure 19 BSM

    Data from Auxiliary Figure 19

    10.17182/hepdata.130266.v1/t30

    Coupling-strength modifiers and their uncertainties for the effective photon, $Z\gamma$ and gluon couplings as free parameters and all other coupling...

  • Aux Figure 20

    Data from Auxiliary Figure 20

    10.17182/hepdata.130266.v1/t31

    Negative log-likelihood contours corresponding to 68% and 95% CL in the ($\kappa_{g}$, $\kappa_{\gamma}$) plane obtained from a combined fit of...

  • Aux Figure 21

    Data from Auxiliary Figure 21

    10.17182/hepdata.130266.v1/t32

    Measured ratios of coupling modifiers. The red line indicates the SM value of unity for each parameter. The level of...

  • Aux Figure 22

    Data from Auxiliary Figure 22

    10.17182/hepdata.130266.v1/t33

    Best-fit values and uncertainties for the cross sections in each measurement region, normalized to the SM predictions for the various...

  • Aux Figure 23

    Data from Auxiliary Figure 23

    10.17182/hepdata.130266.v1/t34

    Correlation matrix for the measured values of the simplified template cross sections.

  • Aux Figure 24a (Expected)

    Data from Auxiliary Figure 24a (Expected)

    10.17182/hepdata.130266.v1/t35

    Expected negative log-likelihood scans as a function of $\kappa_{Z}$.

  • Aux Figure 24a (Observed)

    Data from Auxiliary Figure 24a (Observed)

    10.17182/hepdata.130266.v1/t36

    Observed negative log-likelihood scans as a function of $\kappa_{Z}$.

  • Aux Figure 24b (Expected)

    Data from Auxiliary Figure 24b (Expected)

    10.17182/hepdata.130266.v1/t37

    Expected negative log-likelihood scans as a function of $\kappa_{W}$.

  • Aux Figure 24b (Observed)

    Data from Auxiliary Figure 24b (Observed)

    10.17182/hepdata.130266.v1/t38

    Observed negative log-likelihood scans as a function of $\kappa_{W}$.

  • Aux Figure 24c (Expected)

    Data from Auxiliary Figure 24c (Expected)

    10.17182/hepdata.130266.v1/t39

    Expected negative log-likelihood scans as a function of $\kappa_{t}$.

  • Aux Figure 24c (Observed)

    Data from Auxiliary Figure 24c (Observed)

    10.17182/hepdata.130266.v1/t40

    Observed negative log-likelihood scans as a function of $\kappa_{t}$.

  • Aux Figure 24d (Expected)

    Data from Auxiliary Figure 24d (Expected)

    10.17182/hepdata.130266.v1/t41

    Expected negative log-likelihood scans as a function of $\kappa_{b}$.

  • Aux Figure 24d (Observed)

    Data from Auxiliary Figure 24d (Observed)

    10.17182/hepdata.130266.v1/t42

    Observed negative log-likelihood scans as a function of $\kappa_{b}$.

  • Aux Figure 24e (Expected)

    Data from Auxiliary Figure 24e (Expected)

    10.17182/hepdata.130266.v1/t43

    Expected negative log-likelihood scans as a function of $\kappa_{\tau}$.

  • Aux Figure 24e (Observed)

    Data from Auxiliary Figure 24e (Observed)

    10.17182/hepdata.130266.v1/t44

    Observed negative log-likelihood scans as a function of $\kappa_{\tau}$.

  • Aux Figure 24f (Expected)

    Data from Auxiliary Figure 24f (Expected)

    10.17182/hepdata.130266.v1/t45

    Expected negative log-likelihood scans as a function of $\kappa_{\mu}$.

  • Aux Figure 24f (Observed)

    Data from Auxiliary Figure 24f (Observed)

    10.17182/hepdata.130266.v1/t46

    Observed negative log-likelihood scans as a function of $\kappa_{\mu}$.

  • Aux Figure 24g (Expected)

    Data from Auxiliary Figure 24g (Expected)

    10.17182/hepdata.130266.v1/t47

    Expected negative log-likelihood scans as a function of $\kappa_{g}$.

  • Aux Figure 24g (Observed)

    Data from Auxiliary Figure 24g (Observed)

    10.17182/hepdata.130266.v1/t48

    Observed negative log-likelihood scans as a function of $\kappa_{g}$.

  • Aux Figure 24h (Expected)

    Data from Auxiliary Figure 24h (Expected)

    10.17182/hepdata.130266.v1/t49

    Expected negative log-likelihood scans as a function of $\kappa_{\gamma}$.

  • Aux Figure 24h (Observed)

    Data from Auxiliary Figure 24h (Observed)

    10.17182/hepdata.130266.v1/t50

    Observed negative log-likelihood scans as a function of $\kappa_{\gamma}$.

  • Aux Figure 24i (Expected)

    Data from Auxiliary Figure 24i (Expected)

    10.17182/hepdata.130266.v1/t51

    Expected negative log-likelihood scans as a function of $\kappa_{Z\gamma}$.

  • Aux Figure 24i (Observed)

    Data from Auxiliary Figure 24i (Observed)

    10.17182/hepdata.130266.v1/t52

    Observed negative log-likelihood scans as a function of $\kappa_{Z\gamma}$.

  • Aux Figure 24j (Expected)

    Data from Auxiliary Figure 24j (Expected)

    10.17182/hepdata.130266.v1/t53

    Expected negative log-likelihood scans as a function of $B_{inv.}$.

  • Aux Figure 24j (Observed)

    Data from Auxiliary Figure 24j (Observed)

    10.17182/hepdata.130266.v1/t54

    Observed negative log-likelihood scans as a function of $B_{inv.}$.

  • Aux Figure 24k (Expected)

    Data from Auxiliary Figure 24k (Expected)

    10.17182/hepdata.130266.v1/t55

    Expected negative log-likelihood scans as a function of $B_{u.}$.

  • Aux Figure 24k (Observed)

    Data from Auxiliary Figure 24k (Observed)

    10.17182/hepdata.130266.v1/t56

    Observed negative log-likelihood scans as a function of $B_{u.}$.

  • STXS acceptances

    Data from STXS acceptances

    10.17182/hepdata.130266.v1/t57

    The acceptances of STXS stage 1.2 kinematic regions in the Higgs boson production processes.

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