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Pregled bibliografske jedinice broj: 814799

Search for lepton-flavour-violating decays of the Higgs boson


Khachatryan, Vardan; ...; Morović, Srećko; Ferenček, Dinko; Đurić, Senka; Godinović, Nikola; Lelas, Damir; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Search for lepton-flavour-violating decays of the Higgs boson // Physics letters. B, 749 (2015), 337-362 doi:10.1016/j.physletb.2015.07.053 (međunarodna recenzija, članak, znanstveni)


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Naslov
Search for lepton-flavour-violating decays of the Higgs boson

Autori
Khachatryan, Vardan ; ... ; Morović, Srećko ; Ferenček, Dinko ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Sudić, Lucija ; ... ; Woods, Nate

Izvornik
Physics letters. B (0370-2693) 749 (2015); 337-362

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
high energy physics ; experimental particle physics ; LHC ; CMS ; standard model

Sažetak
The first direct search for lepton-flavour-violating decays of the recently discovered Higgs boson (H) is described. The search is performed in the H to mu tau[e] and H to mu tau[h] channels, where tau[e] and tau[h] are tau leptons reconstructed in the electronic and hadronic decay channels, respectively. The data sample used in this search was collected in pp collisions at a centre-of-mass energy of sqrt(s) = 8 TeV with the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 19.7 inverse femtobarns. The sensitivity of the search is an order of magnitude better than the existing indirect limits. A slight excess of signal events with a significance of 2.4 standard deviations is observed. The p-value of this excess at M[H] = 125 GeV is 0.010. The best fit branching fraction is B(H to mu tau) = (0.84 +0.39 -0.37)%. A constraint on the branching fraction, B(H to mu tau) < 1.51% at 95% confidence level is set. This limit is subsequently used to constrain the mu-tau Yukawa couplings to be less than 3.6E- 3.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
CMS Collaboration



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-7118 - Mjerenje svojstava Higgsovog bozona i potraga za novom fizikom detektorom CMS (Ivica Puljak, )
HRZZ-IS-09.01/346 - Potraga za novim standardnim modelom elementarnih čestica na LHC-u: od preciznih mjerenja elektroslabih procesa do direktnih potraga za novom fizikom (Vuko Brigljević, )

Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

Khachatryan, Vardan; ...; Morović, Srećko; Ferenček, Dinko; Đurić, Senka; Godinović, Nikola; Lelas, Damir; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Search for lepton-flavour-violating decays of the Higgs boson // Physics letters. B, 749 (2015), 337-362 doi:10.1016/j.physletb.2015.07.053 (međunarodna recenzija, članak, znanstveni)
Khachatryan, V., ..., Morović, S., Ferenček, D., Đurić, S., Godinović, N., Lelas, D., Polić, D., Puljak, I. & Antunović, Ž. (2015) Search for lepton-flavour-violating decays of the Higgs boson. Physics letters. B, 749, 337-362 doi:10.1016/j.physletb.2015.07.053.
@article{article, year = {2015}, pages = {337-362}, DOI = {10.1016/j.physletb.2015.07.053}, keywords = {high energy physics, experimental particle physics, LHC, CMS, standard model}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2015.07.053}, volume = {749}, issn = {0370-2693}, title = {Search for lepton-flavour-violating decays of the Higgs boson}, keyword = {high energy physics, experimental particle physics, LHC, CMS, standard model} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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