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Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector.

Publication ,  Journal Article
ATLAS Collaboration; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; AbouZeid, OS; Abramowicz, H; Abreu, H; Abreu, R; Adye, T ...
Published in: The European physical journal. C, Particles and fields
January 2015

Measurements of the ZZ and WW final states in the mass range above the [Formula: see text] and [Formula: see text] thresholds provide a unique opportunity to measure the off-shell coupling strength of the Higgs boson. This paper presents constraints on the off-shell Higgs boson event yields normalised to the Standard Model prediction (signal strength) in the [Formula: see text], [Formula: see text] and [Formula: see text] final states. The result is based on pp collision data collected by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 20.3 fb[Formula: see text] at a collision energy of [Formula: see text] TeV. Using the [Formula: see text] method, the observed 95 [Formula: see text] confidence level (CL) upper limit on the off-shell signal strength is in the range 5.1-8.6, with an expected range of 6.7-11.0. In each case the range is determined by varying the unknown [Formula: see text] and [Formula: see text] background K-factor from higher-order quantum chromodynamics corrections between half and twice the value of the known signal K-factor. Assuming the relevant Higgs boson couplings are independent of the energy scale of the Higgs boson production, a combination with the on-shell measurements yields an observed (expected) 95 [Formula: see text] CL upper limit on [Formula: see text] in the range 4.5-7.5 (6.5-11.2) using the same variations of the background K-factor. Assuming that the unknown [Formula: see text] background K-factor is equal to the signal K-factor, this translates into an observed (expected) 95 [Formula: see text] CL upper limit on the Higgs boson total width of 22.7 (33.0) MeV.

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Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2015

Volume

75

Issue

7

Start / End Page

335

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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ATLAS Collaboration, Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., … Constantinescu, S. (2015). Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector. The European Physical Journal. C, Particles and Fields, 75(7), 335. https://doi.org/10.1140/epjc/s10052-015-3542-2
ATLAS Collaboration, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, et al. “Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector.The European Physical Journal. C, Particles and Fields 75, no. 7 (January 2015): 335. https://doi.org/10.1140/epjc/s10052-015-3542-2.
ATLAS Collaboration, Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, et al. Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector. The European physical journal C, Particles and fields. 2015 Jan;75(7):335.
ATLAS Collaboration, et al. “Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector.The European Physical Journal. C, Particles and Fields, vol. 75, no. 7, Jan. 2015, p. 335. Epmc, doi:10.1140/epjc/s10052-015-3542-2.
ATLAS Collaboration, Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Affolder AA, Agatonovic-Jovin T, Aguilar-Saavedra JA, Agustoni M, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimoto G, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Alkire SP, Allbrooke BMM, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Piqueras DÁ, Alviggi MG, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin J-F, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnold H, Arratia M, Arslan O, Artamonov A, Artoni G, Asai S, Asbah N, Ashkenazi A, Åsman B, Asquith L, Assamagan K, Astalos R, Atkinson M, Atlay NB, Auerbach B, Augsten K, Aurousseau M, Avolio G, Axen B, Ayoub MK, Azuelos G, Baak MA, Baas AE, Bacci C, Bachacou H, Bachas K, Backes M, Backhaus M, Badescu E, Bagiacchi P, Bagnaia P, Bai Y, Bain T, Baines JT, Baker OK, Balek P, Balestri T, Balli F, Banas E, Banerjee S, Bannoura AAE, Bansil HS, Barak L, Baranov SP, Barberio EL, Barberis D, Barbero M, Barillari T, Barisonzi M, Barklow T, Barlow N, Barnes SL, Barnett BM, Barnett RM, Barnovska Z, Baroncelli A, Barone G, Barr AJ, Barreiro F, Barreiro Guimarães da Costa J, Bartoldus R, Barton AE, Bartos P, Bassalat A, Basye A, Bates RL, Batista SJ, Batley JR, Battaglia M, Bauce M, Bauer F, Bawa HS, Beacham JB, Beattie MD, Beau T, Beauchemin PH, Beccherle R, Bechtle P, Beck HP, Becker K, Becker M, Becker S, Beckingham M, Becot C, Beddall AJ, Beddall A, Bednyakov VA, Bee CP, Beemster LJ, Beermann TA, Begel M, Behr JK, Belanger-Champagne C, Bell WH, Bella G, Bellagamba L, Bellerive A, Bellomo M, Belotskiy K, Beltramello O, Benary O, Benchekroun D, Bender M, Bendtz K, Benekos N, Benhammou Y, Benhar Noccioli E, Benitez Garcia JA, Benjamin DP, Bensinger JR, Bentvelsen S, Beresford L, Beretta M, Berge D, Bergeaas Kuutmann E, Berger N, Berghaus F, Beringer J, Bernard C, Bernard NR, Bernius C, Bernlochner FU, Berry T, Berta P, Bertella C, Bertoli G, Bertolucci F, Bertsche C, Bertsche D, Besana MI, Besjes GJ, Bessidskaia Bylund O, Bessner M, Besson N, Betancourt C, Bethke S, Bevan AJ, Bhimji W, Bianchi RM, Bianchini L, Bianco M, Biebel O, Bieniek SP, Biglietti M, Bilbao De Mendizabal J, Bilokon H, Bindi M, Binet S, Bingul A, Bini C, Black CW, Black JE, Black KM, Blackburn D, Blair RE, Blanchard J-B, Blanco JE, Blazek T, Bloch I, Blocker C, Blum W, Blumenschein U, Bobbink GJ, Bobrovnikov VS, Bocchetta SS, Bocci A, Bock C, Boehler M, Bogaerts JA, Bogdanchikov AG, Bohm C, Boisvert V, Bold T, Boldea V, Boldyrev AS, Bomben M, Bona M, Boonekamp M, Borisov A, Borissov G, Borroni S, Bortfeldt J, Bortolotto V, Bos K, Boscherini D, Bosman M, Boudreau J, Bouffard J, Bouhova-Thacker EV, Boumediene D, Bourdarios C, Bousson N, Boutouil S, Boveia A, Boyd J, Boyko IR, Bozic I, Bracinik J, Brandt A, Brandt G, Brandt O, Bratzler U, Brau B, Brau JE, Braun HM, Brazzale SF, Brendlinger K, Brennan AJ, Brenner L, Brenner R, Bressler S, Bristow K, Bristow TM, Britton D, Britzger D, Brochu FM, Brock I, Brock R, Bronner J, Brooijmans G, Brooks T, Brooks WK, Brosamer J, Brost E, Brown J, Bruckman de Renstrom PA, Bruncko D, Bruneliere R, Bruni A, Bruni G, Bruschi M, Bryngemark L, Buanes T, Buat Q, Buchholz P, Buckley AG, Buda SI, Budagov IA, Buehrer F, Bugge L, Bugge MK, Bulekov O, Burckhart H, Burdin S, Burghgrave B, Burke S, Burmeister I, Busato E, Büscher D, Büscher V, Bussey P, Buszello CP, Butler JM, Butt AI, Buttar CM, Butterworth JM, Butti P, Buttinger W, Buzatu A, Buzykaev R, Cabrera Urbán S, Caforio D, Cakir O, Calafiura P, Calandri A, Calderini G, Calfayan P, Caloba LP, Calvet D, Calvet S, Camacho Toro R, Camarda S, Cameron D, Caminada LM, Caminal Armadans R, Campana S, Campanelli M, Campoverde A, Canale V, Canepa A, Cano Bret M, Cantero J, Cantrill R, Cao T, Capeans Garrido MDM, Caprini I, Caprini M, Capua M, Caputo R, Cardarelli R, Carli T, Carlino G, Carminati L, Caron S, Carquin E, Carrillo-Montoya GD, Carter JR, Carvalho J, Casadei D, Casado MP, Casolino M, Castaneda-Miranda E, Castelli A, Castillo Gimenez V, Castro NF, Catastini P, Catinaccio A, Catmore JR, Cattai A, Caudron J, Cavaliere V, Cavalli D, Cavalli-Sforza M, Cavasinni V, Ceradini F, Cerio BC, Cerny K, Cerqueira AS, Cerri A, Cerrito L, Cerutti F, Cerv M, Cervelli A, Cetin SA, Chafaq A, Chakraborty D, Chalupkova I, Chang P, Chapleau B, Chapman JD, Charlton DG, Chau CC, Chavez Barajas CA, Cheatham S, Chegwidden A, Chekanov S, Chekulaev SV, Chelkov GA, Chelstowska MA, Chen C, Chen H, Chen K, Chen L, Chen S, Chen X, Chen Y, Cheng HC, Cheng Y, Cheplakov A, Cheremushkina E, Cherkaoui El Moursli R, Chernyatin V, Cheu E, Chevalier L, Chiarella V, Childers JT, Chiodini G, Chisholm AS, Chislett RT, Chitan A, Chizhov MV, Choi K, Chouridou S, Chow BKB, Christodoulou V, Chromek-Burckhart D, Chu ML, Chudoba J, Chuinard AJ, Chwastowski JJ, Chytka L, Ciapetti G, Ciftci AK, Cinca D, Cindro V, Cioara IA, Ciocio A, Citron ZH, Ciubancan M, Clark A, Clark BL, Clark PJ, Clarke RN, Cleland W, Clement C, Coadou Y, Cobal M, Coccaro A, Cochran J, Coffey L, Cogan JG, Cole B, Cole S, Colijn AP, Collot J, Colombo T, Compostella G, Conde Muiño P, Coniavitis E, Connell SH, Connelly IA, Consonni SM, Consorti V, Constantinescu S. Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector. The European physical journal C, Particles and fields. 2015 Jan;75(7):335.
Journal cover image

Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2015

Volume

75

Issue

7

Start / End Page

335

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics