Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Aguilo, E.; Bergauer, T.; Dragicevic, M.; Er�, J.; Fabjan, C.; Friedl, M.; Fr�hwirth, R.; Ghete, V. M.; Hammer, J.; D'Hondt, J.; Hoch, M.; H�rmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Kn�nz, V.; Krammer, M.; Kr�tschmer, I.; Liko, D.; Majerotto, W.; Mikulec, I.; Pernicka, M.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Sch�fbeck, R.; Strauss, J.; Szoncs�, F.; Taurok, A.; Waltenberger, W.; Walzel, G.; Widl, E.; Wulz, C. E.; Chekhovsky, V.; Emeliantchik, I.; Litomin, A.; Makarenko, V.; Mossolov, V.; Shumeiko, N.; Solin, A.; Stefanovitch, R.; Suarez Gonzalez, J.; Fedorov, A.; Korzhik, M.; Missevitch, O.; Zuyeuski, R.; Bansal, M.; Bansal, S.; Beaumont, W.; Cornelis, T.; De Wolf, E. A.; Druzhkin, D.; Janssen, X.; Luyckx, S.; Mucibello, L.; Ochesanu, S.; Roland, B.; Rougny, R.; Selvaggi, M.; Staykova, Z.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Blekman, F.; Blyweert, S.; Devroede, O.; Gonzalez Suarez, R.; Goorens, R.; Kalogeropoulos, A.; Maes, M.; Olbrechts, A.; Tavernier, S.; Van Doninck, W.; Van Lancker, L.; Van Mulders, P.; Van Onsem, G. P.; Villella, I.; Clerbaux, B.; De Lentdecker, G.; Dero, V.; Dewulf, J. P.; Gay, A. P.R.; Hreus, T.; L�onard, A.; Marage, P. E.; Mohammadi, A.; Reis, T.; Rugovac, S.; Thomas, L.; Vander Velde, C.; Vanlaer, P.; Wang, J.; Wickens, J.; Adler, V.; McClatchey, Richard

doi:10.1016/j.physletb.2012.08.021

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Aguilo, E.; Bergauer, T.; Dragicevic, M.; Er?, J.; Fabjan, C.; Friedl, M.; Fr?hwirth, R.; Ghete, V. M.; Hammer, J.; D'Hondt, J.; Hoch, M.; H?rmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Kn?nz, V.; Krammer, M.; Kr?tschmer, I.; Liko, D.; Majerotto, W.; Mikulec, I.; Pernicka, M.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Sch?fbeck, R.; Strauss, J.; Szoncs?, F.; Taurok, A.; Waltenberger, W.; Walzel, G.; Widl, E.; Wulz, C. E.; Chekhovsky, V.; Emeliantchik, I.; Litomin, A.; Makarenko, V.; Mossolov, V.; Shumeiko, N.; Solin, A.; Stefanovitch, R.; Suarez Gonzalez, J.; Fedorov, A.; Korzhik, M.; Missevitch, O.; Zuyeuski, R.; Bansal, M.; Bansal, S.; Beaumont, W.; Cornelis, T.; De Wolf, E. A.; Druzhkin, D.; Janssen, X.; Luyckx, S.; Mucibello, L.; Ochesanu, S.; Roland, B.; Rougny, R.; Selvaggi, M.; Staykova, Z.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Blekman, F.; Blyweert, S.; Devr...

Authors

S. Chatrchyan

V. Khachatryan

A. M. Sirunyan

A. Tumasyan

W. Adam

E. Aguilo

T. Bergauer

M. Dragicevic

J. Er�

C. Fabjan

M. Friedl

R. Fr�hwirth

V. M. Ghete

J. Hammer

J. D'Hondt

M. Hoch

N. H�rmann

J. Hrubec

M. Jeitler

W. Kiesenhofer

V. Kn�nz

M. Krammer

I. Kr�tschmer

D. Liko

W. Majerotto

I. Mikulec

M. Pernicka

B. Rahbaran

C. Rohringer

H. Rohringer

R. Sch�fbeck

J. Strauss

F. Szoncs�

A. Taurok

W. Waltenberger

G. Walzel

E. Widl

C. E. Wulz

V. Chekhovsky

I. Emeliantchik

A. Litomin

V. Makarenko

V. Mossolov

N. Shumeiko

A. Solin

R. Stefanovitch

J. Suarez Gonzalez

A. Fedorov

M. Korzhik

O. Missevitch

R. Zuyeuski

M. Bansal

S. Bansal

W. Beaumont

T. Cornelis

E. A. De Wolf

D. Druzhkin

X. Janssen

S. Luyckx

L. Mucibello

S. Ochesanu

B. Roland

R. Rougny

M. Selvaggi

Z. Staykova

H. Van Haevermaet

P. Van Mechelen

N. Van Remortel

A. Van Spilbeeck

F. Blekman

S. Blyweert

O. Devroede

R. Gonzalez Suarez

R. Goorens

A. Kalogeropoulos

M. Maes

A. Olbrechts

S. Tavernier

W. Van Doninck

L. Van Lancker

P. Van Mulders

G. P. Van Onsem

I. Villella

B. Clerbaux

G. De Lentdecker

V. Dero

J. P. Dewulf

A. P.R. Gay

T. Hreus

A. L�onard

P. E. Marage

A. Mohammadi

T. Reis

S. Rugovac

L. Thomas

C. Vander Velde

P. Vanlaer

J. Wang

J. Wickens

V. Adler

Richard McClatchey Richard.Mcclatchey@uwe.ac.uk
Academic Specialist - CATE

Abstract

Results are presented from searches for the standard model Higgs boson in proton-proton collisions at s=7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 fb-1 at 7 TeV and 5.3 fb-1 at 8 TeV. The search is performed in five decay modes: γγ, ZZ, W+W-, τ+τ-, and bb-. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, γγ and ZZ; a fit to these signals gives a mass of 125.3±0.4(stat.)±0.5(syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one. © 2012 CERN.

Citation

Adler, V., Wickens, J., Wang, J., Vanlaer, P., Vander Velde, C., Thomas, L., …McClatchey, R. (2012). Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC. Physics Letters B, 716(1), 30-61. https://doi.org/10.1016/j.physletb.2012.08.021

Journal Article Type	Article
Publication Date	Sep 17, 2012
Deposit Date	Oct 1, 2012
Publicly Available Date	Feb 9, 2016
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Print ISSN	0370-2693
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	716
Issue	1
Pages	30-61
DOI	https://doi.org/10.1016/j.physletb.2012.08.021
Keywords	CMS, physics, Higgs, Higgs boson
Public URL	https://uwe-repository.worktribe.com/output/943807
Publisher URL	http://dx.doi.org/10.1016/j.physletb.2012.08.021
Additional Information	Corporate Creators : CMS Collaboration