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Author |
Campanario, F.; Kubocz, M. |
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Title |
Higgs-boson production in association with three jets via gluon fusion at the LHC: Gluonic contributions |
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Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
88 |
Issue |
5 |
Pages |
054021 - 5pp |
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Abstract |
Higgs production in association with three jets via gluon fusion is an important channel for the measurement of the CP properties of the Higgs particle at the LHC. In this paper, we go beyond the heavy top effective theory approximation and include at LO the full mass dependence of the top- and bottom-quark contributions. We consider the dominant subchannel gg -> Hggg which involves the manipulation of massive rank-5 hexagon integrals. Furthermore, we present results for several differential distributions and show deviations from the effective theory as large as 100% at high p(T) for light Higgs masses. |
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1550-7998 |
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WOS:000324691000003 |
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no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1615 |
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Author |
Campanario, F.; Rauch, M.; Sapeta, S. |
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Title |
ZZ production at high transverse momenta beyond NLO QCD |
Type |
Journal Article |
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Year |
2015 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
08 |
Issue |
8 |
Pages |
070 - 25pp |
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Abstract |
We study the production of the four-lepton final state l+l−l+l−, predominantly produced by a pair of electroweak Z bosons, ZZ. Using the LoopSim method, we merge NLO QCD results for ZZ and ZZ+jet and obtain approximate NNLO predictions for ZZ production. The exact gluon-fusion loop-squared contribution to the ZZ process is also included. On top of that, we add to our merged sample the gluon-fusion ZZ+jet contributions from the gluon-gluon channel, which is formally of N^3LO and provides approximate results at NLO for the gluon-fusion mechanism. The predictions are obtained with the VBFNLO package and include the leptonic decays of the Z bosons with all off-shell and spin-correlation effects, as well as virtual photon contributions. We compare our predictions with existing results for the total inclusive cross section at NNLO and find a very good agreement. Then, we present results for differential distributions for two experimental setups, one used in searches for anomalous triple gauge boson couplings, the other in Higgs analyses in the four charged-lepton final state channel. We find that the approximate NNLO corrections are large, reaching up to 20% at high transverse momentum of the Z boson or the leading lepton, and are not covered by the NLO scale uncertainties. Distributions of the four-lepton invariant mass are, however, stable with respect to QCD corrections at this order. |
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no |
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yes |
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yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2595 |
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Author |
Bozzi, G.; Campanario, F.; Hankele, V.; Zeppenfeld, D. |
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Title |
Next-to-leading order QCD corrections to W+W-gamma and ZZ gamma production with leptonic decays |
Type |
Journal Article |
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Year |
2010 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
81 |
Issue |
9 |
Pages |
094030 - 7pp |
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Abstract |
The computation of the O(alpha(s)) QCD corrections to the cross sections for W+W-gamma and ZZ gamma production in hadronic collisions is presented. We consider the case of a real photon in the final state, but include full leptonic decays of the W and Z bosons. Numerical results for the LHC and the Tevatron are obtained through a fully flexible parton level Monte Carlo program based on the structure of the VBFNLO program, allowing an easy implementation of arbitrary cuts and distributions. We show the dependence on scale variations of the integrated cross sections and provide evidence that next-to-leading order (NLO) QCD corrections strongly modify the LO predictions for observables at the LHC both in magnitude and in shape. |
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[Bozzi, G.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy |
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Amer Physical Soc |
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English |
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ISSN |
1550-7998 |
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Notes |
ISI:000278145100048 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ elepoucu @ |
Serial |
439 |
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Author |
Campanario, F.; Kerner, M.; Ninh, L.D.; Zeppenfeld, D. |
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Title |
WZ production in association with two jets at next-to-leading order in QCD |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys. Rev. Lett. |
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Volume |
111 |
Issue |
5 |
Pages |
052003 - 4pp |
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Keywords |
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Abstract |
We report on the calculation of W-+/- Zjj production with leptonic decays at hadron-hadron colliders at next-to-leading order in QCD. These processes are important both to test the quartic gauge couplings of the standard model and because they constitute relevant backgrounds to beyond standard model physics searches. Our results show that the next-to-leading order corrections reduce significantly the scale uncertainties and have a nontrivial phase space dependence. |
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Address |
[Campanario, Francisco] Univ Valencia, CSIC, IFIC, Div Theory, E-46980 Valencia, Spain |
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Amer Physical Soc |
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English |
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ISSN |
0031-9007 |
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Notes |
WOS:000322779700005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1551 |
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Author |
Campanario, F.; Figy, T.M.; Platzer, S.; Sjodahl, M. |
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Title |
Electroweak Higgs Boson Plus Three Jet Production at Next-to-Leading-Order QCD |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys. Rev. Lett. |
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Volume |
111 |
Issue |
21 |
Pages |
211802 - 4pp |
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Keywords |
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Abstract |
We calculate next-to-leading order (NLO) QCD corrections to electroweak Higgs boson plus three jet production. Both vector boson fusion (VBF) and Higgs-strahlung type contributions are included along with all interferences. The calculation is implemented within the MATCHBOX NLO framework of the HERWIG++ event generator. |
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Address |
[Campanario, Francisco] Univ Valencia, CSIC, IFIC, Div Theory, E-46100 Valencia, Spain |
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Amer Physical Soc |
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English |
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0031-9007 |
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Notes |
WOS:000327245100004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1657 |
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Author |
Campanario, F.; Kaiser, N.; Zeppenfeld, D. |
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Title |
W gamma production in vector boson fusion at NLO in QCD |
Type |
Journal Article |
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Year |
2014 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
89 |
Issue |
1 |
Pages |
014009 - 5pp |
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Keywords |
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Abstract |
The next-to-leading order QCD corrections to W-+/-gamma. production in association with two jets via vector boson fusion are calculated, including the leptonic decay of the W with full off-shell effects and spin correlations. The process lends itself to a test of quartic gauge couplings. The next-to-leading order corrections reduce the scale uncertainty significantly and show a nontrivial phase space dependence. |
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Address |
[Campanario, Francisco] Univ Valencia CSIC, IFIC, Div Theory, E-46980 Valencia, Spain, Email: francisco.campanario@ific.uv.es; |
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Publisher |
Amer Physical Soc |
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English |
Summary Language |
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Series Editor |
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Series Volume |
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Series Issue |
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ISSN |
1550-7998 |
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Notes |
WOS:000331841100004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1714 |
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| Permanent link to this record |
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Author |
Campanario, F.; Kerner, M.; Ninh, L.D.; Zeppenfeld, D. |
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Title |
Next-to-leading order QCD corrections to W+W+ and W-W- production in association with two jets |
Type |
Journal Article |
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Year |
2014 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
89 |
Issue |
5 |
Pages |
054009 - 11pp |
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Keywords |
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Abstract |
We present a study of W+W+ jj and W-W-jj production including leptonic decays in hadron-hadron collisions. The full electroweak and QCD induced contributions and their interferences are calculated at leading order. We find that, for inclusive cuts, the interference effects can be large if the jets are produced with large transverse momentum where, however, the production rate is suppressed. We also discuss the vector-boson-fusion cuts and show the validity of the vector-boson-fusion approximation. The next-to-leading order QCD corrections to the QCD-induced channels are also calculated. Compared to the previous calculation, we allow the intermediate W bosons to be off shell. For on-shell W production, we obtain an excellent agreement with previous results. Our code will be publicly available as part of the parton level Monte Carlo program VBFLNO. |
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Address |
[Campanario, Francisco] Univ Valencia, CSIC, Theory Div, IFIC, E-46980 Valencia, Spain, Email: francisco.campanario@ific.uv.es; |
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Amer Physical Soc |
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English |
Summary Language |
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ISSN |
1550-7998 |
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Conference |
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Notes |
WOS:000333103700004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1740 |
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| Permanent link to this record |
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Author |
Campanario, F.; Roth, R.; Zeppenfeld, D. |
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Title |
QCD radiation in WH and WZ production and anomalous coupling measurements |
Type |
Journal Article |
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Year |
2015 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
91 |
Issue |
5 |
Pages |
054039 - 10pp |
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Keywords |
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Abstract |
We study QCD radiation for the WH and WZ production processes at the LHC. We identify the regions sensitive to anomalous couplings, by considering jet observables, computed at next-to-leading-order QCD with the use of the Monte Carlo program VBFNLO. Based on these observations, we propose the use of a dynamical jet veto. The dynamical jet veto avoids the problem of large logarithms depending on the veto scale, hence providing more reliable predictions and simultaneously increasing the sensitivity to anomalous coupling searches, especially in the WZ production process. |
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Address |
[Campanario, Francisco] Univ Valencia, CSIC, IFIC, Theory Div, E-46980 Paterna, Valencia, Spain, Email: francisco.campanario@ific.uv.es; |
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Publisher |
Amer Physical Soc |
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English |
Summary Language |
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Series Editor |
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Series Volume |
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ISSN |
1550-7998 |
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Conference |
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Notes |
WOS:000352062400002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2173 |
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| Permanent link to this record |
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Author |
Campanario, F.; Figy, T.M.; Platzer, S.; Rauch, M.; Schichtel, P.; Sjodahl, M. |
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Title |
Stress testing the vector-boson-fusion approximation in multijet final states |
Type |
Journal Article |
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Year |
2018 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
98 |
Issue |
3 |
Pages |
033003 - 7pp |
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Keywords |
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Abstract |
We consider electroweak Higgs plus three jets production at NLO QCD beyond strict VBF acceptance cuts. We investigate, for the first time, how accurate the VBF approximation is in these regions and within perturbative uncertainties by a detailed comparison of full and approximate calculations. We find that a rapidity gap between the tagging jets guarantees a good approximation, while an invariant mass cut alone is not sufficient, which needs to be confronted with experimental choices. We also find that a significant part of the QCD corrections can be attributed to Higgs-Strahlungs-type topologies. |
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Address |
[Campanario, Francisco] Univ Valencia, Div Theory, IFIC, CSIC, E-46980 Valencia, Spain |
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Publisher |
Amer Physical Soc |
Place of Publication |
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English |
Summary Language |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2470-0010 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:000442476300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3700 |
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Author |
Campanario, F.; Czyz, H.; Gluza, J.; Jelinski, T.; Rodrigo, G.; Tracz, S.; Zhuridov, D. |
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Title |
Standard model radiative corrections in the pion form factor measurements do not explain the a(mu) anomaly |
Type |
Journal Article |
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Year |
2019 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
100 |
Issue |
7 |
Pages |
076004 - 5pp |
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Keywords |
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Abstract |
In this paper, we address the question of whether the almost four standard deviations difference between theory and experiment for the muon anomalous magnetic moment a(mu) can be explained as a higher-order Standard Model perturbation effect in the pion form factor measurements. This question has, until now, remained open, obscuring the source of discrepancies between the measurements. We calculate the last radiative corrections for the extraction of the pion form factor, which were believed to be potentially substantial enough to explain the data within the Standard Model. We find that the corrections are too small to diminish existing discrepancies in the determination of the pion form factor for different kinematical configurations of low-energy BABAR, BES-III and KLOE experiments. Consequently, they cannot noticeably change the previous predictions for a(mu) and decrease the deviations between theory and direct measurements. To solve the above issues, new data and better understanding of low-energy experimental setups are needed, especially as new direct a(mu) measurements at Fermilab and J-PARC will provide new insights and substantially shrink the experimental error. |
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Address |
[Campanario, Francisco; Rodrigo, German; Tracz, Szymon] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46980 Valencia, Spain, Email: henryk.czyz@us.edu.pl |
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Publisher |
Amer Physical Soc |
Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2470-0010 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000489577800008 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4168 |
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| Permanent link to this record |
