The LHCb VELO Upgrade module construction
Journal of Instrumentation IOP Publishing 19:06 (2024) P06023
Authors:
K Akiba, M Alexander, C Bertella, A Biolchini, A Bitadze, G Bogdanova, S Borghi, TJV Bowcock, K Bridges, M Brock, AT Burke, J Buytaert, W Byczynski, J Carroll, V Coco, P Collins, A Davis, O De Aguiar Francisco, K De Bruyn, S De Capua, K De Roo, F Doherty, L Douglas, L Dufour, M JohnAbstract:
The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I detector facilitates operation at higher luminosity and utilises full-detector information at the LHC collision rate, critically including the use of vertex information. A new vertex locator system, the VELO Upgrade, has been constructed. The core element of the new VELO are the double-sided pixelated hybrid silicon detector modules which operate in vacuum close to the LHC beam in a high radiation environment. The construction and quality assurance tests of these modules are described in this paper. The modules incorporate 200 μm thick, n-on-p silicon sensors bump-bonded to 130 nm technology ASICs. These are attached with high precision to a silicon microchannel substrate that uses evaporative CO2 cooling. The ASICs are controlled and read out with flexible printed circuits that are glued to the substrate and wire-bonded to the chips. The mechanical support of the module is given by a carbon fibre plate, two carbon fibre rods and an aluminium plate. The sensor attachment was achieved with an average precision of 21 μm, more than 99.5% of all pixels are fully functional, and a thermal figure of merit of 3 Kcm2W-1 was achieved. The production of the modules was successfully completed in 2021, with the final assembly and installation completed in time for data taking in 2022.Observation of Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- decays
European Physical Journal C Springer Nature 84:6 (2024) 575
Authors:
R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, P Adlarson, C Agapopoulou, CA Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, R Amalric, S Amato, JL Amey, Y Amhis, L An, L Anderlini, M Andersson, A Andreianov, P Andreola, M Andreotti, D Andreou, A Anelli, D Ao, F Archilli, M Argenton, S Arguedas Cuendis, A Artamonov, M Artuso, E Aslanides, M Atzeni, B Audurier, D Bacher, I Bachiller Perea, S Bachmann, M Bachmayer, JJ Back, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista de Souza Leite, M Barbetti, IR Barbosa, RJ Barlow, S Barsuk, W Barter, M Bartolini, J Bartz, F Baryshnikov, JM Basels, G Bassi, B Batsukh, A Battig, A Bay, A Beck, M Becker, F Bedeschi, IB Bediaga, A Beiter, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Benane, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, S Bernet Andres, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, J Bex, Ia Bezshyiko, J Bhom, MS Bieker, NV Biesuz, P Billoir, A Biolchini, M Birch, FCR Bishop, A Bitadze, A Bizzeti, MP Blago, T Blake, F Blanc, JE Blank, S Blusk, D Bobulska, V Bocharnikov, JA Boelhauve, O Boente Garcia, T Boettcher, A Bohare, A Boldyrev, CS Bolognani, R Bolzonella, N Bondar, F Borgato, S Borghi, M Borsato, JT Borsuk, SA Bouchiba, TJV Bowcock, A Boyer, C Bozzi, MJ Bradley, S Braun, A Brea Rodriguez, N Breer, J Brodzicka, A Brossa Gonzalo, J Brown, D Brundu, A Buonaura, L Buonincontri, AT Burke, C Burr, A Bursche, A Butkevich, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, S Cali, M Calvi, M Calvo Gomez, J Cambon Bouzas, P Campana, DH Campora Perez, AF Campoverde Quezada, S Capelli, L Capriotti, R Caravaca-Mora, A Carbone, L Carcedo Salgado, R Cardinale, A Cardini, P Carniti, L Carus, A Casais Vidal, R Caspary, G Casse, J Castro Godinez, M Cattaneo, G Cavallero, V Cavallini, S Celani, J Cerasoli, D Cervenkov, S Cesare, AJ Chadwick, I Chahrour, M Charles, Ph Charpentier, CA Chavez Barajas, M Chefdeville, C Chen, S Chen, Z Chen, A Chernov, S Chernyshenko, V Chobanova, S Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, MF Cicala, X Cid Vidal, G Ciezarek, P Cifra, PEL Clarke, M Clemencic, HV Cliff, J Closier, JL Cobbledick, C Cocha Toapaxi, V Coco, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, A Comerma-Montells, L Congedo, A Contu, N Cooke, I Corredoira, A Correia, G Corti, JJ Cottee Meldrum, B Couturier, DC Craik, M Cruz Torres, R Currie, CL Da Silva, S Dadabaev, L Dai, X Dai, E Dall’Occo, J Dalseno, C D’Ambrosio, J Daniel, A Danilina, P d’Argent, A Davidson, JE Davies, A Davis, O De Aguiar Francisco, C De Angelis, J de Boer, K De Bruyn, S De Capua, M De Cian, U De Freitas Carneiro Da Graca, E De Lucia, JM De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, F De Vellis, JA de Vries, F Debernardis, D Decamp, V Dedu, L Del Buono, B Delaney, H-P Dembinski, J Deng, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, I Diachkov, S Didenko, S Ding, V Dobishuk, AD Docheva, A Dolmatov, C Dong, AM Donohoe, F Dordei, AC dos Reis, L Douglas, AG Downes, W Duan, P Duda, MW Dudek, L Dufour, V Duk, P Durante, MM Duras, JM Durham, A Dziurda, A Dzyuba, S Easo, E Eckstein, U Egede, A Egorychev, V Egorychev, C Eirea Orro, S Eisenhardt, E Ejopu, S Ek-In, L Eklund, M Elashri, J Ellbracht, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, F Fabiano, LN Falcao, Y Fan, B Fang, L Fantini, M Faria, K Farmer, D Fazzini, L Felkowski, M Feng, M Feo, M Fernandez Gomez, AD Fernez, F Ferrari, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, RA Fini, M Fiorini, M Firlej, KM Fischer, DS Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, LF Foreman, R Forty, D Foulds-Holt, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, DA Friday, L Frontini, J Fu, Q Fuehring, Y Fujii, T Fulghesu, E Gabriel, G Galati, MD Galati, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, H Gao, R Gao, Y Gao, Y Gao, Y Gao, M Garau, LM Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, KG Garg, L Garrido, C Gaspar, RE Geertsema, LL Gerken, E Gersabeck, M Gersabeck, T Gershon, Z Ghorbanimoghaddam, L Giambastiani, FI Giasemis, V Gibson, HK Giemza, AL Gilman, M Giovannetti, A Gioventù, P Gironella Gironell, C Giugliano, MA Giza, EL Gkougkousis, FC Glaser, VV Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, JA Gooding, IV Gorelov, C Gotti, JP Grabowski, LA Granado Cardoso, E Graugés, E Graverini, L Grazette, G Graziani, AT Grecu, LM Greeven, NA Grieser, L Grillo, S Gromov, C Gu, M Guarise, M Guittiere, V Guliaeva, PA Günther, A-K Guseinov, E Gushchin, Y Guz, T Gys, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, J Haimberger, M Hajheidari, T Halewood-leagas, MM Halvorsen, PM Hamilton, J Hammerich, Q Han, X Han, S Hansmann-Menzemer, L Hao, N Harnew, T Harrison, M Hartmann, C Hasse, J He, K Heijhoff, F Hemmer, C Henderson, RDL Henderson, AM Hennequin, K Hennessy, L Henry, J Herd, P Herrero Gascon, J Heuel, A Hicheur, D Hill, SE Hollitt, J Horswill, R Hou, Y Hou, N Howarth, J Hu, J Hu, W Hu, X Hu, W Huang, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, M Idzik, D Ilin, P Ilten, A Inglessi, A Iniukhin, A Ishteev, K Ivshin, R Jacobsson, H Jage, SJ Jaimes Elles, S Jakobsen, E Jans, BK Jashal, A Jawahery, V Jevtic, E Jiang, X Jiang, Y Jiang, YJ Jiang, M John, D Johnson, CR Jones, TP Jones, S Joshi, B Jost, N Jurik, I Juszczak, D Kaminaris, S Kandybei, Y Kang, M Karacson, D Karpenkov, M Karpov, AM Kauniskangas, JW Kautz, F Keizer, DM Keller, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, G Khreich, T Kirn, VS Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, MR Kmiec, S Koliiev, L Kolk, A Konoplyannikov, P Kopciewicz, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, A Kozachuk, P Kravchenko, L Kravchuk, M Kreps, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, J Kubat, S Kubis, W Kucewicz, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, BK Kutsenko, D Lacarrere, A Lai, A Lampis, D Lancierini, C Landesa Gomez, JJ Lane, R Lane, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, C Lazzeroni, R Le Gac, SH Lee, R Lefèvre, A Leflat, S Legotin, M Lehuraux, O Leroy, T Lesiak, B Leverington, A Li, H Li, K Li, L Li, P Li, P-R Li, S Li, T Li, T Li, Y Li, Y Li, Z Li, Z Lian, X Liang, C Lin, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, K Liu, Q Liu, S Liu, Y Liu, Y Liu, YL Liu, A Lobo Salvia, A Loi, J Lomba Castro, T Long, JH Lopes, A Lopez Huertas, SL ópez Soliño, GH Lovell, C Lucarelli, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, K Lynch, X-R Lyu, G M., R Ma, S Maccolini, F Machefert, F Maciuc, I Mackay, LR Madhan Mohan, MM Madurai, A Maevskiy, D Magdalinski, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, L Malentacca, A Malinin, T Maltsev, G Manca, G Mancinelli, C Mancuso, R Manera Escalero, D Manuzzi, D Marangotto, JF Marchand, R Marchevski, U Marconi, S Mariani, C Marin Benito, J Marks, AM Marshall, PJ Marshall, G Martelli, G Martellotti, L Martinazzoli, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, V Matiunin, C Matteuzzi, KR Mattioli, A Mauri, E Maurice, J Mauricio, P Mayencourt, M Mazurek, M McCann, L Mcconnell, TH McGrath, NT McHugh, A McNab, R McNulty, B Meadows, G Meier, D Melnychuk, M Merk, A Merli, L Meyer Garcia, D Miao, H Miao, M Mikhasenko, DA Milanes, A Minotti, E Minucci, T Miralles, SE Mitchell, B Mitreska, DS Mitzel, A Modak, A Mödden, RA Mohammed, RD Moise, S Mokhnenko, T Mombächer, M Monk, IA Monroy, S Monteil, A Morcillo Gomez, G Morello, MJ Morello, MP Morgenthaler, J Moron, AB Morris, AG Morris, R Mountain, H Mu, ZM Mu, E Muhammad, F Muheim, M Mulder, K Müller, F Mũnoz-Rojas, R Murta, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, P Neustroev, R Newcombe, J Nicolini, D Nicotra, EM Niel, N Nikitin, P Nogga, NS Nolte, C Normand, J Novoa Fernandez, G Nowak, C Nunez, HN Nur, A Oblakowska-Mucha, V Obraztsov, T Oeser, S Okamura, R Oldeman, F Oliva, M Olocco, CJG Onderwater, RH O’Neil, JM Otalora Goicochea, T Ovsiannikova, P Owen, A Oyanguren, O Ozcelik, KO Padeken, B Pagare, PR Pais, T Pajero, A Palano, M Palutan, G Panshin, L Paolucci, A Papanestis, M Pappagallo, LL Pappalardo, C Pappenheimer, C Parkes, B Passalacqua, G Passaleva, D Passaro, A Pastore, M Patel, J Patoc, C Patrignani, CJ Pawley, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, A Pereiro Castro, P Perret, A Perro, K Petridis, A Petrolini, S Petrucci, H Pham, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, D Pinci, F Pisani, M Pizzichemi, V Placinta, M Plo Casasus, F Polci, M Poli Lener, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, S Ponce, D Popov, S Poslavskii, K Prasanth, C Prouve, V Pugatch, G Punzi, W Qian, N Qin, S Qu, R Quagliani, RI Rabadan Trejo, B Rachwal, JH Rademacker, M Rama, M Ramírez García, M Ramos Pernas, MS Rangel, F Ratnikov, G Raven, M Rebollo De Miguel, F Redi, J Reich, F Reiss, Z Ren, PK Resmi, R Ribatti, GR Ricart, D Riccardi, S Ricciardi, K Richardson, M Richardson-Slipper, K Rinnert, P Robbe, G Robertson, E Rodrigues, E Rodriguez Fernandez, JA Rodriguez Lopez, E Rodriguez Rodriguez, A Rogovskiy, DL Rolf, A Rollings, P Roloff, V Romanovskiy, M Romero Lamas, A Romero Vidal, G Romolini, F Ronchetti, M Rotondo, SR Roy, MS Rudolph, T Ruf, M Ruiz Diaz, RA Ruiz Fernandez, J Ruiz Vidal, A Ryzhikov, J Ryzka, JJ Saborido Silva, R Sadek, N Sagidova, N Sahoo, B Saitta, M Salomoni, C Sanchez Gras, I Sanderswood, R Santacesaria, C Santamarina Rios, M Santimaria, L Santoro, E Santovetti, A Saputi, D Saranin, G Sarpis, M Sarpis, A Sarti, C Satriano, A Satta, M Saur, D Savrina, H Sazak, LG Scantlebury Smead, A Scarabotto, S Schael, S Scherl, AM Schertz, M Schiller, H Schindler, M Schmelling, B Schmidt, S Schmitt, H Schmitz, O Schneider, A Schopper, N Schulte, S Schulte, MH Schune, R Schwemmer, G Schwering, B Sciascia, A Sciuccati, S Sellam, A Semennikov, M Senghi Soares, A Sergi, N Serra, L Sestini, A Seuthe, Y Shang, DM Shangase, M Shapkin, RS Sharma, I Shchemerov, L Shchutska, T Shears, L Shekhtman, Z Shen, S Sheng, V Shevchenko, B Shi, EB Shields, Y Shimizu, E Shmanin, R Shorkin, JD Shupperd, R Silva Coutinho, G Simi, S Simone, N Skidmore, R Skuza, T Skwarnicki, MW Slater, JC Smallwood, E Smith, K Smith, M Smith, A Snoch, L Soares Lavra, MD Sokoloff, FJP Soler, A Solomin, A Solovev, I Solovyev, R Song, Y Song, Y Song, YS Song, FL Souza De Almeida, B Souza De Paula, E Spadaro Norella, E Spedicato, JG Speer, E Spiridenkov, P Spradlin, V Sriskaran, F Stagni, M Stahl, S Stahl, S Stanislaus, EN Stein, O Steinkamp, O Stenyakin, H Stevens, D Strekalina, Y Su, F Suljik, J Sun, L Sun, Y Sun, PN Swallow, K Swientek, F Swystun, A Szabelski, T Szumlak, M Szymanski, Y Tan, S Taneja, MD Tat, A Terentev, F Terzuoli, F Teubert, E Thomas, DJD Thompson, H Tilquin, V Tisserand, S T’Jampens, M Tobin, L Tomassetti, G Tonani, X Tong, D Torres Machado, L Toscano, DY Tou, C Trippl, G Tuci, N Tuning, LH Uecker, A Ukleja, DJ Unverzagt, E Ursov, A Usachov, A Ustyuzhanin, U Uwer, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, H Van Hecke, E van Herwijnen, CB Van Hulse, R Van Laak, M van Veghel, R Vazquez Gomez, P Vazquez Regueiro, CV ázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, A Venkateswaran, M Vesterinen, M Vieites Diaz, X Vilasis-Cardona, E Vilella Figueras, A Villa, P Vincent, FC Volle, D vom Bruch, V Vorobyev, N Voropaev, K Vos, G Vouters, C Vrahas, J Walsh, EJ Walton, G Wan, C Wang, G Wang, J Wang, J Wang, J Wang, J Wang, M Wang, NW Wang, R Wang, X Wang, XW Wang, Y Wang, Z Wang, Z Wang, Z Wang, JA Ward, NK Watson, D Websdale, Y Wei, BDC Westhenry, DJ White, M Whitehead, AR Wiederhold, D Wiedner, G Wilkinson, MK Wilkinson, M Williams, MRJ Williams, R Williams, FF Wilson, W Wislicki, M Witek, L Witola, CP Wong, G Wormser, SA Wotton, H Wu, J Wu, Y Wu, K Wyllie, S Xian, Z Xiang, Y Xie, A Xu, J Xu, L Xu, L Xu, M Xu, Z Xu, Z Xu, Z Xu, D Yang, S Yang, X Yang, Y Yang, Z Yang, Z Yang, V Yeroshenko, H Yeung, H Yin, CY Yu, J Yu, X Yuan, E Zaffaroni, M Zavertyaev, M Zdybal, M Zeng, C Zhang, D Zhang, J Zhang, L Zhang, S Zhang, S Zhang, Y Zhang, Y Zhang, YZ Zhang, Y Zhao, A Zharkova, A Zhelezov, XZ Zheng, Y Zheng, T Zhou, X Zhou, Y Zhou, V Zhovkovska, LZ Zhu, X Zhu, X Zhu, Z Zhu, V Zhukov, J Zhuo, Q Zou, D Zuliani, G ZunicaModification of χ_{c1}(3872) and ψ(2S) Production in pPb Collisions at sqrt[s_{NN}]=8.16 TeV.
Physical review letters 132:24 (2024) 242301
Authors:
R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, P Adlarson, C Agapopoulou, CA Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, R Amalric, S Amato, JL Amey, Y Amhis, L An, L Anderlini, M Andersson, A Andreianov, P Andreola, M Andreotti, D Andreou, AA Anelli, D Ao, F Archilli, M Argenton, S Arguedas Cuendis, A Artamonov, M Artuso, E Aslanides, M Atzeni, B Audurier, D Bacher, I Bachiller Perea, S Bachmann, M Bachmayer, JJ Back, A Bailly-Reyre, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista de Souza Leite, M Barbetti, IR Barbosa, RJ Barlow, S Barsuk, W Barter, M Bartolini, F Baryshnikov, JM Basels, G Bassi, B Batsukh, A Battig, A Bay, A Beck, M Becker, F Bedeschi, IB Bediaga, A Beiter, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Benane, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, S Bernet Andres, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, J Bex, Ia Bezshyiko, J Bhom, MS Bieker, NV Biesuz, P Billoir, A Biolchini, M Birch, FCR Bishop, A Bitadze, A Bizzeti, MP Blago, T Blake, F Blanc, JE Blank, S Blusk, D Bobulska, V Bocharnikov, JA Boelhauve, O Boente Garcia, T Boettcher, A Bohare, A Boldyrev, CS Bolognani, R Bolzonella, N Bondar, F Borgato, S Borghi, M Borsato, JT Borsuk, SA Bouchiba, TJV Bowcock, A Boyer, C Bozzi, MJ Bradley, S Braun, A Brea Rodriguez, N Breer, J Brodzicka, A Brossa Gonzalo, J Brown, D Brundu, A Buonaura, L Buonincontri, AT Burke, C Burr, A Bursche, A Butkevich, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, S Cali, M Calvi, M Calvo Gomez, J Cambon Bouzas, P Campana, DH Campora Perez, AF Campoverde Quezada, S Capelli, L Capriotti, RC Caravaca-Mora, A Carbone, L Carcedo Salgado, R Cardinale, A Cardini, P Carniti, L Carus, A Casais Vidal, R Caspary, G Casse, J Castro Godinez, M Cattaneo, G Cavallero, V Cavallini, S Celani, J Cerasoli, D Cervenkov, S Cesare, AJ Chadwick, I Chahrour, M Charles, Ph Charpentier, CA Chavez Barajas, M Chefdeville, C Chen, S Chen, A Chernov, S Chernyshenko, V Chobanova, S Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, MF Cicala, X Cid Vidal, G Ciezarek, P Cifra, PEL Clarke, M Clemencic, HV Cliff, J Closier, JL Cobbledick, C Cocha Toapaxi, V Coco, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, A Comerma-Montells, L Congedo, A Contu, N Cooke, I Corredoira, A Correia, G Corti, JJ Cottee Meldrum, B Couturier, DC Craik, M Cruz Torres, R Currie, CL Da Silva, S Dadabaev, L Dai, X Dai, E Dall'Occo, J Dalseno, C D'Ambrosio, J Daniel, A Danilina, P d'Argent, A Davidson, JE Davies, A Davis, O De Aguiar Francisco, C De Angelis, J de Boer, K De Bruyn, S De Capua, M De Cian, U De Freitas Carneiro Da Graca, E De Lucia, JM De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, F De Vellis, JA de Vries, F Debernardis, D Decamp, V Dedu, L Del Buono, B Delaney, H-P Dembinski, J Deng, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, I Diachkov, S Didenko, S Ding, V Dobishuk, AD Docheva, A Dolmatov, C Dong, AM Donohoe, F Dordei, AC Dos Reis, L Douglas, AG Downes, W Duan, P Duda, MW Dudek, L Dufour, V Duk, P Durante, MM Duras, JM Durham, D Dutta, A Dziurda, A Dzyuba, S Easo, E Eckstein, U Egede, A Egorychev, V Egorychev, C Eirea Orro, S Eisenhardt, E Ejopu, S Ek-In, L Eklund, M Elashri, J Ellbracht, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, F Fabiano, LN Falcao, Y Fan, B Fang, L Fantini, M Faria, K Farmer, D Fazzini, L Felkowski, M Feng, M Feo, M Fernandez Gomez, AD Fernez, F Ferrari, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, RA Fini, M Fiorini, M Firlej, KM Fischer, DS Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, LF Foreman, R Forty, D Foulds-Holt, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, DA Friday, L Frontini, J Fu, Q Fuehring, Y Fujii, T Fulghesu, E Gabriel, G Galati, MD Galati, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, H Gao, R Gao, Y Gao, Y Gao, Y Gao, M Garau, LM Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, KG Garg, L Garrido, C Gaspar, RE Geertsema, LL Gerken, E Gersabeck, M Gersabeck, T Gershon, Z Ghorbanimoghaddam, L Giambastiani, FI Giasemis, V Gibson, HK Giemza, AL Gilman, M Giovannetti, A Gioventù, P Gironella Gironell, C Giugliano, MA Giza, EL Gkougkousis, FC Glaser, VV Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, JA Gooding, IV Gorelov, C Gotti, JP Grabowski, LA Granado Cardoso, E Graugés, E Graverini, L Grazette, G Graziani, AT Grecu, LM Greeven, NA Grieser, L Grillo, S Gromov, C Gu, M Guarise, M Guittiere, V Guliaeva, PA Günther, A-K Guseinov, E Gushchin, Y Guz, T Gys, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, J Haimberger, M Hajheidari, T Halewood-Leagas, MM Halvorsen, PM Hamilton, J Hammerich, Q Han, X Han, S Hansmann-Menzemer, L Hao, N Harnew, T Harrison, M Hartmann, C Hasse, J He, K Heijhoff, F Hemmer, C Henderson, RDL Henderson, AM Hennequin, K Hennessy, L Henry, J Herd, J Heuel, A Hicheur, D Hill, SE Hollitt, J Horswill, R Hou, Y Hou, N Howarth, J Hu, J Hu, W Hu, X Hu, W Huang, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, M Idzik, D Ilin, P Ilten, A Inglessi, A Iniukhin, A Ishteev, K Ivshin, R Jacobsson, H Jage, SJ Jaimes Elles, S Jakobsen, E Jans, BK Jashal, A Jawahery, V Jevtic, E Jiang, X Jiang, Y Jiang, YJ Jiang, M John, D Johnson, CR Jones, TP Jones, S Joshi, B Jost, N Jurik, I Juszczak, D Kaminaris, S Kandybei, Y Kang, M Karacson, D Karpenkov, M Karpov, AM Kauniskangas, JW Kautz, F Keizer, DM Keller, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, G Khreich, T Kirn, VS Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, MR Kmiec, S Koliiev, L Kolk, A Konoplyannikov, P Kopciewicz, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, A Kozachuk, P Kravchenko, L Kravchuk, M Kreps, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, J Kubat, S Kubis, W Kucewicz, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, BK Kutsenko, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, C Landesa Gomez, JJ Lane, R Lane, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, C Lazzeroni, R Le Gac, SH Lee, R Lefèvre, A Leflat, S Legotin, M Lehuraux, O Leroy, T Lesiak, B Leverington, A Li, H Li, K Li, L Li, P Li, P-R Li, S Li, T Li, T Li, Y Li, Y Li, Z Li, Z Lian, X Liang, C Lin, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, K Liu, Q Liu, S Liu, Y Liu, Y Liu, YL Liu, A Lobo Salvia, A Loi, J Lomba Castro, T Long, JH Lopes, A Lopez Huertas, S López Soliño, GH Lovell, C Lucarelli, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, K Lynch, X-R Lyu, GM Ma, R Ma, S Maccolini, F Machefert, F Maciuc, I Mackay, LR Madhan Mohan, MM Madurai, A Maevskiy, D Magdalinski, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, L Malentacca, A Malinin, T Maltsev, G Manca, G Mancinelli, C Mancuso, R Manera Escalero, D Manuzzi, D Marangotto, JF Marchand, R Marchevski, U Marconi, S Mariani, C Marin Benito, J Marks, AM Marshall, PJ Marshall, G Martelli, G Martellotti, L Martinazzoli, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, V Matiunin, C Matteuzzi, KR Mattioli, A Mauri, E Maurice, J Mauricio, P Mayencourt, M Mazurek, M McCann, L Mcconnell, TH McGrath, NT McHugh, A McNab, R McNulty, B Meadows, G Meier, D Melnychuk, M Merk, A Merli, L Meyer Garcia, D Miao, H Miao, M Mikhasenko, DA Milanes, A Minotti, E Minucci, T Miralles, SE Mitchell, B Mitreska, DS Mitzel, A Modak, A Mödden, RA Mohammed, RD Moise, S Mokhnenko, T Mombächer, M Monk, IA Monroy, S Monteil, A Morcillo Gomez, G Morello, MJ Morello, MP Morgenthaler, J Moron, AB Morris, AG Morris, R Mountain, H Mu, ZM Mu, E Muhammad, F Muheim, M Mulder, K Müller, F Mũnoz-Rojas, R Murta, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, P Neustroev, R Newcombe, J Nicolini, D Nicotra, EM Niel, N Nikitin, P Nogga, NS Nolte, C Normand, J Novoa Fernandez, G Nowak, C Nunez, HN Nur, A Oblakowska-Mucha, V Obraztsov, T Oeser, S Okamura, A Okhotnikov, R Oldeman, F Oliva, M Olocco, CJG Onderwater, RH O'Neil, JM Otalora Goicochea, T Ovsiannikova, P Owen, A Oyanguren, O Ozcelik, KO Padeken, B Pagare, PR Pais, T Pajero, A Palano, M Palutan, G Panshin, L Paolucci, A Papanestis, M Pappagallo, LL Pappalardo, C Pappenheimer, C Parkes, B Passalacqua, G Passaleva, D Passaro, A Pastore, M Patel, J Patoc, C Patrignani, CJ Pawley, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, A Pereiro Castro, P Perret, A Perro, K Petridis, A Petrolini, S Petrucci, H Pham, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, D Pinci, F Pisani, M Pizzichemi, V Placinta, M Plo Casasus, F Polci, M Poli Lener, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, S Ponce, D Popov, S Poslavskii, K Prasanth, L Promberger, C Prouve, V Pugatch, V Puill, G Punzi, HR Qi, W Qian, N Qin, S Qu, R Quagliani, RI Rabadan Trejo, B Rachwal, JH Rademacker, M Rama, M Ramírez García, M Ramos Pernas, MS Rangel, F Ratnikov, G Raven, M Rebollo De Miguel, F Redi, J Reich, F Reiss, Z Ren, PK Resmi, R Ribatti, GR Ricart, D Riccardi, S Ricciardi, K Richardson, M Richardson-Slipper, K Rinnert, P Robbe, G Robertson, E Rodrigues, E Rodriguez Fernandez, JA Rodriguez Lopez, E Rodriguez Rodriguez, A Rogovskiy, DL Rolf, A Rollings, P Roloff, V Romanovskiy, M Romero Lamas, A Romero Vidal, G Romolini, F Ronchetti, M Rotondo, SR Roy, MS Rudolph, T Ruf, M Ruiz Diaz, RA Ruiz Fernandez, J Ruiz Vidal, A Ryzhikov, J Ryzka, JJ Saborido Silva, R Sadek, N Sagidova, N Sahoo, B Saitta, M Salomoni, C Sanchez Gras, I Sanderswood, R Santacesaria, C Santamarina Rios, M Santimaria, L Santoro, E Santovetti, A Saputi, D Saranin, G Sarpis, M Sarpis, A Sarti, C Satriano, A Satta, M Saur, D Savrina, H Sazak, LG Scantlebury Smead, A Scarabotto, S Schael, S Scherl, AM Schertz, M Schiller, H Schindler, M Schmelling, B Schmidt, S Schmitt, H Schmitz, O Schneider, A Schopper, N Schulte, S Schulte, MH Schune, R Schwemmer, G Schwering, B Sciascia, A Sciuccati, S Sellam, A Semennikov, M Senghi Soares, A Sergi, N Serra, L Sestini, A Seuthe, Y Shang, DM Shangase, M Shapkin, I Shchemerov, L Shchutska, T Shears, L Shekhtman, Z Shen, S Sheng, V Shevchenko, B Shi, EB Shields, Y Shimizu, E Shmanin, R Shorkin, JD Shupperd, R Silva Coutinho, G Simi, S Simone, N Skidmore, R Skuza, T Skwarnicki, MW Slater, JC Smallwood, E Smith, K Smith, M Smith, A Snoch, L Soares Lavra, MD Sokoloff, FJP Soler, A Solomin, A Solovev, I Solovyev, R Song, Y Song, Y Song, YS Song, FL Souza De Almeida, B Souza De Paula, E Spadaro Norella, E Spedicato, JG Speer, E Spiridenkov, P Spradlin, V Sriskaran, F Stagni, M Stahl, S Stahl, S Stanislaus, EN Stein, O Steinkamp, O Stenyakin, H Stevens, D Strekalina, Y Su, F Suljik, J Sun, L Sun, Y Sun, PN Swallow, K Swientek, F Swystun, A Szabelski, T Szumlak, M Szymanski, Y Tan, S Taneja, MD Tat, A Terentev, F Terzuoli, F Teubert, E Thomas, DJD Thompson, H Tilquin, V Tisserand, S T'Jampens, M Tobin, L Tomassetti, G Tonani, X Tong, D Torres Machado, L Toscano, DY Tou, C Trippl, G Tuci, N Tuning, LH Uecker, A Ukleja, DJ Unverzagt, E Ursov, A Usachov, A Ustyuzhanin, U Uwer, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, H Van Hecke, E van Herwijnen, CB Van Hulse, R Van Laak, M van Veghel, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, A Venkateswaran, M Vesterinen, D Vieira, M Vieites Diaz, X Vilasis-Cardona, E Vilella Figueras, A Villa, P Vincent, FC Volle, D Vom Bruch, V Vorobyev, N Voropaev, K Vos, G Vouters, C Vrahas, J Walsh, EJ Walton, G Wan, C Wang, G Wang, J Wang, J Wang, J Wang, J Wang, M Wang, NW Wang, R Wang, X Wang, XW Wang, Y Wang, Z Wang, Z Wang, Z Wang, JA Ward, NK Watson, D Websdale, Y Wei, BDC Westhenry, DJ White, M Whitehead, AR Wiederhold, D Wiedner, G Wilkinson, MK Wilkinson, M Williams, MRJ Williams, R Williams, FF Wilson, W Wislicki, M Witek, L Witola, CP Wong, G Wormser, SA Wotton, H Wu, J Wu, Y Wu, K Wyllie, S Xian, Z Xiang, Y Xie, A Xu, J Xu, L Xu, L Xu, M Xu, Z Xu, Z Xu, Z Xu, D Yang, S Yang, X Yang, Y Yang, Z Yang, Z Yang, V Yeroshenko, H Yeung, H Yin, CY Yu, J Yu, X Yuan, E Zaffaroni, M Zavertyaev, M Zdybal, M Zeng, C Zhang, D Zhang, J Zhang, L Zhang, S Zhang, S Zhang, Y Zhang, Y Zhang, YZ Zhang, Y Zhao, A Zharkova, A Zhelezov, XZ Zheng, Y Zheng, T Zhou, X Zhou, Y Zhou, V Zhovkovska, LZ Zhu, X Zhu, X Zhu, Z Zhu, V Zhukov, J Zhuo, Q Zou, D Zuliani, G Zunica, LHCb CollaborationAbstract:
The LHCb Collaboration measures production of the exotic hadron χ_{c1}(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ(2S) suggests that the exotic χ_{c1}(3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from proton-proton collisions indicates that the presence of the nucleus may modify χ_{c1}(3872) production rates. This is the first measurement of the nuclear modification factor of an exotic hadron.The LHCb Upgrade I
Journal of Instrumentation IOP Publishing 19:05 (2024) P05065
Authors:
R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, C Achard, T Ackernley, B Adeva, M Adinolfi, P Adlarson, H Afsharnia, C Agapopoulou, CA Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, R Amalric, S AmatoAbstract:
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all detectors into an all-software trigger is central to the new design, facilitating the reconstruction of events at the maximum LHC interaction rate, and their selection in real time. The experiment's tracking system has been completely upgraded with a new pixel vertex detector, a silicon tracker upstream of the dipole magnet and three scintillating fibre tracking stations downstream of the magnet. The whole photon detection system of the RICH detectors has been renewed and the readout electronics of the calorimeter and muon systems have been fully overhauled. The first stage of the all-software trigger is implemented on a GPU farm. The output of the trigger provides a combination of totally reconstructed physics objects, such as tracks and vertices, ready for final analysis, and of entire events which need further offline reprocessing. This scheme required a complete revision of the computing model and rewriting of the experiment's software.Search for time-dependent $CP$ violation in $D^0 \rightarrow \pi^+ \pi^- \pi^0$ decays
(2024)