Precision measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>b</mml:mi><mml:mo>−</mml:mo></mml:msubsup></mml:math> baryon lifetime

A sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>p</a:mi><a:mi>p</a:mi></a:math> collision data, corresponding to an integrated luminosity of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mn>5.5</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:msup><c:mi>fb</c:mi><c:mrow><c:mo>−</c:mo><c:mn>1</c:mn></c:mrow></c:msup></c:math> and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msubsup><e:mi mathvariant="normal">Ξ</e:mi><e:mi>b</e:mi><e:mo>−</e:mo></e:msubsup></e:math> baryon to that of the <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" display="inline"><h:msubsup><h:mi mathvariant="normal">Λ</h:mi><h:mi>b</h:mi><h:mn>0</h:mn></h:msubsup></h:math> baryon, <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msub><k:mi>r</k:mi><k:mi>τ</k:mi></k:msub><k:mo>≡</k:mo><k:msub><k:mi>τ</k:mi><k:msubsup><k:mi mathvariant="normal">Ξ</k:mi><k:mi>b</k:mi><k:mo>−</k:mo></k:msubsup></k:msub><k:mo>/</k:mo><k:msub><k:mi>τ</k:mi><k:msubsup><k:mi mathvariant="normal">Λ</k:mi><k:mi>b</k:mi><k:mn>0</k:mn></k:msubsup></k:msub></k:math>. The value <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:msub><o:mi>r</o:mi><o:mi>τ</o:mi></o:msub><o:mo>=</o:mo><o:mn>1.076</o:mn><o:mo>±</o:mo><o:mn>0.013</o:mn><o:mo>±</o:mo><o:mn>0.006</o:mn></o:math> is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value from Run 1 to obtain <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"><q:msubsup><q:mi>r</q:mi><q:mi>τ</q:mi><q:mrow><q:mi>Run</q:mi><q:mtext> </q:mtext><q:mn>1</q:mn><q:mo>,</q:mo><q:mn>2</q:mn></q:mrow></q:msubsup><q:mo>=</q:mo><q:mn>1.078</q:mn><q:mo>±</q:mo><q:mn>0.012</q:mn><q:mo>±</q:mo><q:mn>0.007</q:mn></q:math>. Multiplying by the world-average value of the <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"><s:msubsup><s:mi mathvariant="normal">Λ</s:mi><s:mi>b</s:mi><s:mn>0</s:mn></s:msubsup></s:math> lifetime yields <v:math xmlns:v="http://www.w3.org/1998/Math/MathML" display="inline"><v:mrow><v:msubsup><v:mrow><v:mi>τ</v:mi></v:mrow><v:mrow><v:msubsup><v:mrow><v:mi mathvariant="normal">Ξ</v:mi></v:mrow><v:mrow><v:mi>b</v:mi></v:mrow><v:mrow><v:mo>−</v:mo></v:mrow></v:msubsup></v:mrow><v:mrow><v:mi>Run</v:mi><v:mtext> </v:mtext><v:mn>1</v:mn><v:mo>,</v:mo><v:mn>2</v:mn></v:mrow></v:msubsup><v:mo>=</v:mo><v:mn>1.578</v:mn><v:mo>±</v:mo><v:mn>0.018</v:mn><v:mo>±</v:mo><v:mn>0.010</v:mn><v:mo>±</v:mo><v:mn>0.011</v:mn><v:mtext> </v:mtext><v:mtext> </v:mtext><v:mi>ps</v:mi></v:mrow></v:math>, where the uncertainties are statistical, systematic, and due to the limited knowledge of the <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"><y:msubsup><y:mi mathvariant="normal">Λ</y:mi><y:mi>b</y:mi><y:mn>0</y:mn></y:msubsup></y:math> lifetime. This measurement improves the precision of the current world average of the <bb:math xmlns:bb="http://www.w3.org/1998/Math/MathML" display="inline"><bb:msubsup><bb:mi mathvariant="normal">Ξ</bb:mi><bb:mi>b</bb:mi><bb:mo>−</bb:mo></bb:msubsup></bb:math> lifetime by about a factor of 2, and is in good agreement with the most recent theoretical predictions. © 2024 CERN, for the LHCb Collaboration 2024 CERN

Authors

Institutions

Publication Details

Journal
Physical review. D/Physical review. D.
Published
2024-10-03
DOI
https://doi.org/10.1103/physrevd.110.072002
Citations
1
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
0.66

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Precision measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>b</mml:mi><mml:mo>−</mml:mo></mml:msubsup></mml:math> baryon lifetime

L. De Paula, A. Seuthe, I. Corredoira, M. M. Duras et al.
1 citations
Physical review. D/Physical review. D.
Particle physics theoretical and experimental studies
0.66
article

Precision measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>b</mml:mi><mml:mo>−</mml:mo></mml:msubsup></mml:math> baryon lifetime

L. De Paula, A. Seuthe, I. Corredoira, M. M. Duras, D. Martínez Santos, A. Lobo Salvia, S. Schulte, M. Martinelli, S. Sheng, J. de Boer, H.-P. Dembinski, J. Yu, O. Leroy, S. Jakobsen, J. Heuel, B. Saitta, E. Epple, H. Tilquin, A. Kupść, Marie Bachmayer, W. Barter, Yuki Fujii, F. Ferrari, A. Bertolin, D. Karpenkov, K. Richardson, G. Punzi, H. V. Cliff, G. Sarpis, S. Borghi, F. Muheim, M. Guarise, P. Ilten, N. Jurik, G. Tonani, Y. Wei, Ö. Özçelik, Vukan Jevtic, K. Yang, A. Beck, D. Marangotto, V. Matiunin, J. E. Blank, J. Xu, E. Jiang, D. Bacher, A. Grecu, T. Li, C. Prouvé, T. Ketel, W. Baldini, E. Jans, J. Hammerich, P. Kravchenko, A. Andreianov, A. Inglessi, K. Fischer, H. Schindler, M. Fontana, M. Monk, A. Okhotnikov, B. Passalacqua, A. Ishteev, J. Novoa Fernandez, X. Zhu, M. Pló Casasús, R. Matev, D. Saranin, A. Schopper, P. Garcia Moreno, V. Placinta, S. Ely, G. Mancinelli, F. Blanc, Rita Sadek, F. Pisani, D. S. Mitzel, L. Li, N. Polukhina, M. Charles, L. G. Scantlebury Smead, R. Williams, F. Ferreira Rodrigues, L. Kolk, Z. Xu, R. Quagliani, S. Cali, S. Easo, H. Sazak, J. Baptista de Souza Leite, A. Konoplyannikov, A. Ryzhikov, L. Toscano, A. Mauri, B. Couturier, Dorothea Vom Bruch, B. Dey, X. Vilasís-Cardona, K. Liu, S. J. Jaimes Elles, A.-K. Guseinov, D. Nicotra, P. Collins, A. Berezhnoy, Z. Chen, C. Zhang, W. Byczynski, Louis Henry, P. Baladrón Rodríguez, H. Pereira Da Costa, A. D. Dowling, V. Shevchenko, M. Zdybał, Y. Fan, Zakariya Aliouche, J. J. Back, T. Miralles, Q. Li, J. Haimberger, N. Valls Canudas, E. Kulikova, José Javier Saavedra-Arias, M. Bartolini, Miguel Ruiz Diaz, D. Miao, W. Krupa, F. Borgato, S. Barsuk, M. Schiller, Y. Zhao, L. Soares Lavra, U. Egede, S. Monteil, J. T. Borsuk, P. R. Pais, P. Billoir, A. Obłąkowska-Mucha, M. Merk, M. Pappagallo, M. Pizzichemi, T. Nanut, A. Gioventù, N. Qin, I. R. Barbosa, L. Martinazzoli, Y. L. Liu, G. Meier, A. Biolchini, E. Rodriguez Fernandez, A. Rogovskiy, G. Benane, J. M. Otalora Goicochea, K. Müller, Z. Ghorbanimoghaddam, L. Congedo, Xutao Zheng, E. Ursov, C. Betancourt, Ibrahim Chahrour, G. Martellotti, L. Garrido, A. Merli, T. Rong, M. Chefdeville, R. J. Hunter, E. Ben-Haim, W. Krzemień, M. W. Majewski, A. Lampis, E. Golobardes, N. Kleijne, A. Usachov, J. Reich, S. Bachmann, J. W. Kautz, R. E. Geertsema, F. Polci, G. Gong, C. Y. Yu, E. Vilella Figueras, M. Becker, B. Sciascia, M. Poli Lener, O. Kot, J. M. De Miranda, A. Leflat, I. Gorelov, S. Legotin, G. Manca, B. Fang, E. Rodrigues, R. McNulty, Justin Bartz, O. Boente García, P. Carniti, J. Dalseno, C. Fitzpatrick, N. Harnew, D. Andreou, C. Landesa Gomez, F. M. Meng, S. Celani, X. Dai, R. Forty, A. Zhelezov, H. Mu, P. Spradlin, T. Gershon, J. Wu, X. W. Wang, R. Song, G. Haefeli, F. L. Liu, A. Chubykin, P. Durante, M. Féo, Frédéric Hemmer, R. D. Moise, M. Kreps, N. Breer, A. Artamonov, D. L. Rolf, S. Malde, R. Ribatti, S. Cesare, V. Kudryavtsev, G. Corti, V. Yeroshenko, Mikhail Barnyakov, J. Bhom, E. Minucci, M. Richardson-Slipper, G. Khreich, C. Dong, M. Ferrillo, Marion Lehuraux, E. Spadaro Norella, A. Bizzeti, P. Roloff, B. Mitreska, X. Hu, Gianluca Zunica, C. L. Da Silva, S. Belin, Z. Ren, R. Mountain, X. Zhu, K. R. Mattioli, A. Brea Rodríguez, K. Belous, R. I. Rabadán Trejo, S. Perazzini, A. Boyer, A. Maevskiy, D. Yang, T. H. McGrath, G. A. Vasquez, R. Aaij, M. Artuso, D. Brundu, K. Klimaszewski, A. Butkevich, C. S. Bolognani, T. Fulghesu, V. Balagura, J. M. Durham, P. A. Günther, O. Schneider, E. Spedicato, R. Ataíde Da Silva, Y. Amhis, Federico de Benedetti, A. Palano, J. He, A. Massafferri, S. López Soliño, S. Scherl, G. Cavallero, M. Whitehead, R. H. O’Neil, Y. Zhang, A. Gilman, D. M. Shangase, S. Xian, E. Graugés, M. Witek, A. Solovev, D. A. Friday, D. Y. Tou, T. Blake, I. Polyakov, M. Vieites Diaz, M. D. Galati, L. A. Granado Cardoso, M. Olocco, A. Chernov, F. C. Glaser, M. John, M. Calvi, E. Zaffaroni, Domenico Riccardi, E. Luppi, Alberto Perro, M. Waterlaat, Bridget Mack, M. Mulder, B. K. Jashal, C. Agapopoulou, A. J. Chadwick, Thomas Christian Senger, I. Juszczak, X. Yuan, S. Liu, K. Wyllie, J. L. Amey, O. Kitouni, M. Smith, V. V. Gligorov, J. Horswill, K. Vos, D. J. Unverzagt, E. Dall’Occo, M. Stahl, S. A. Wotton, Z. Xu, J. E. Davies, G. M., B. D. C. Westhenry, R. Le Gac, F. Bedeschi, M. Tat, Yu. Guz, L. R. Madhan Mohan, B. Leverington, Τ. Oeser, J. F. Hu, S. Stanislaus, L. Meyer Garcia, L. Pica, L. Dufour, I. Mackay, A. Mathad, A. Dzyuba, V. Tisserand, Roman Shorkin, E. L. Gkougkousis, C. R. Jones, Y. Gao, E. Gersabeck, L. Giambastiani, H. Stevens, K. Hennessy, N. T. McHugh, W. Huang, R. Caravaca-Mora, T. Mombächer, M. Atzeni, A. Lai, S. Okamura, C. J. G. Onderwater, R. Oldeman, J. J. Velthuis, Y. R. Hou, L. An, A. Campoverde, M. Slater, M. S. Rangel, S. Arguedas Cuendis, G. Martelli, Kunal Garg, P. Camargo Magalhaes, F. Gonçalves Abrantes, N. Neufeld, D. Zhang, A. Contu, N. Sagidova, P. Gironella Gironell, S. Mokhnenko, M. M. Halvorsen, M. Fernández Gómez, A. Scarabotto, A. Lopez Huertas, J. A. Ward, M. Calvo Gomez, E. Santovetti, Izaac Sanderswood, A. S. W. Abdelmotteleb, I. Belov, F. Martínez-Vidal, B. Meadows, C. Kar, Rashi Sharma, M. Faria, M. Gersabeck, F. Redi, K. Li, A. Venkateswaran, H. Jage, R. Van Laak, F. L. Souza De Almeida, L. Felkowski, H. Pham, M. Korolev, C. Patrignani, V. Cavallini, M. Mikhasenko, M. Hartmann, D. Wiedner, R. Gao, A. M. Marshall, R. A. Mohammed, V. Sriskaran, G. Tuci, A. Zharkova, K. Smith, N. Schulte, Mohamed Elashri, G. Pietrzyk, P. Naik, E. Graverini, M. Ramírez García, R. A. Fini, A. Gallas Torreira, Felicia Carolin Volle, C. Matteuzzi, A. Bitadze, A. Sciuccati, V. Duk, C. Gotti, T. Lesiak, F. Dordei, V. Romanovskiy, A. Solomin, C. Trippl, F. De Vellis, D. Golubkov, N. A. Grieser, V. Chobanova, G. Wormser, Y. Liu, M. De Serio, J. Buytaert, Z. Shen, B. Audurier, A. Minotti, L. Paolucci, S. Capelli, E. Smith, Thomas Long, N. Cooke, A. Dziurda, Ivan Solovyev, P. Ciambrone, M. Karacson, H. Wu, P. N. Swallow, O. De Aguiar Francisco, A. Petrolini, A. Terentev, R. Amalric, S. Simone, S. Kholodenko, P. Albicocco, A. M. Donohoe, E. van Herwijnen, S. Bernet Andres, L. Z. Zhu, Klaas Padeken, D. J. White, M. Chrząszcz, B. Souza De Paula, Alex Daniel Fernez, C. Henderson, D. Fazzini, A. Egorychev, Zeqing Mu, M. Fiorini, Serhii Cholak, P. M. Hamilton, T. Kirn, B. Batsukh, Alessia Anelli, J. A. Rodriguez Lopez, P. K. Resmi, Y. Shimizu, T. Lin, D. Hill, D. Pereima, C. J. Pawley, R. Santacesaria, A. Cardini, T. J. V. Bowcock, S. Kubis, F. Archilli, M. Needham, D. Pinci, M. Adinolfi, D. Červenkov, A. Pereiro Castro, M. Vesterinen, Y. Sun, E. N. Stein, C. Sanchez Gras, H. Yeung, M. Kucharczyk, L. Santoro, A. Bay, P. Duda, P. d’Argent, J. P. Grabowski, A. Saputi, P. De Simone, L. Sun, T. Boettcher, L. Carcedo Salgado, G. Galati, Esteban Currás Rivera, Y. Gao, J. H. Lopes, X. Tong, J. García Pardiñas, S. Vecchi, C. Giugliano, H. Cai, N. V. Biesuz, L. Grillo, J. Daniel, Alexander Davidson, M. Borsato, Jike Wang, G. Bassi, D. H. Cámpora Pérez, R. Ma, D. Torres Machado, N. Skidmore, Paula Herrero Gascon, P. Koppenburg, J. F. Marchand, R. A. Ruiz Fernandez, S. Klaver, B. Adeva, X. Zhou, S. De Capua, A. Danilina, L. Shchutska, Vladimir Bocharnikov, S. Neubert, M. R. Kmiec, A. Lupato, M. Sarpis, M. De Cian, I. Bediaga, U. Marconi, M. Alexander, F. Lazzari, S. Cadeddu, L. Shekhtman, H. Bao, J. A. Gooding, C. Aidala, S. Gromov, F. C. R. Bishop, M. Rebollo De Miguel, S. Mariani, I. Kostiuk, J. J. Lane, S. Yang, C. Frei, K. De Bruyn, R. Bolzonella, J. Nicolini, J. Deng, M. Saur, Vasyl Dobishuk, E. Aslanides, C. Vrahas, J. Marks, T. Gys, B. Pagare, C. Gaspar, E. J. Walton, S. Joshi, Q. Zou, E. Muhammad, X. Han, J. C. Smallwood, F. Debernardis, V. Zhukov, D. Maisuzenko, C. Zeng, E. Polycarpo, Kate Lynch, F. Suljik, N. Sahoo, R. Bernet, C. D’Ambrosio, A. Golutvin, A. Snoch, Lucas Dittmann, M. P. Morgenthaler, M. Mazurek, H. Gao, D. Foulds-Holt, G. Liu, A. Buonaura, P. Krokovny, M. Birch, A. Semennikov, G. Vouters, M. McCann, F. Fleuret, A. B. Morris, P. Adlarson, P. Campana, S. Kandybei, Louis Lenard Gerken, S. Blusk, M. van Veghel, S. T’Jampens, Jonas Nathanael Eschle, A. R. Wiederhold, V. Obraztsov, R. D. L. Henderson, M. Barbetti, S. E. Hollitt, S. Esen, A. Poluektov, Yiduo Shang, X. Wang, M. A. Giza, A. T. Burke, S. Chernyshenko, F. Oliva, R. Jacobsson, Daniel Magdalinski, T. Li, N. Nikitin, E. Maurice, I. Diachkov, V. Lukashenko, T. Ackernley, G. Wan, R. Caspary, M. Ferro-Luzzi, Lukas Calefice, J. Herd, S. Z. Zheng, V. Bellée, X. Yang, C. Hadjivasiliou, Y. Tan, V. Zhovkovska, Elisabeth Maria Niel, J. M. Basels, T. Pajero, G. Casse, S. Qu, Y. Zhou, G. Nowak, L. M. Greeven, L. N. Falcao, G. Passaleva, C. Santamarina Ríos, M. Wang, J. A. Boelhauve, R. Nandakumar, M. Zavertyaev, S. Schael, M. W. Dudek, H. K. Giemza, M. Hushchyn, M. Schmelling, M. Andreotti, K. Rinnert, K. Farmer, F. Keizer, P. Gandini, J. J. Malczewski, К. Ившин, G. Morello, M. Goncerz, K. Habermann, H. Van Hecke, F. Betti, C. P. Wong, J. S. Butter, A. C. dos Reis, H. Miao, A. Jawahery, E. Gabriel, M. Guittiere, Shah Rukh Qasim, F. Abudinén, Peilian Li, T. Skwarnicki, R. Lane, F. Teubert, M. Franco Sevilla, D. C. Craik, J. Lomba Castro, Nikolai Voropaev, M. Rama, D. Lancierini, D. S. Fitzgerald, V. Pugatch, T. Hadavizadeh, L. Fantini, M. Wilkinson, J. Ruiz Vidal, D. Lucchesi, G. Wang, A. Mödden, E. Shmanin, Sonia Amina Bouchiba, O. Lantwin, V. Coco, E. Lemos Cid, S. Ding, J. Albrecht, L. Witola, A. Comerma-Montells, L. Cojocariu, F. Dettori, Z. Xiang, Rebecca Murta, R. Calabrese, S. Akar, L. Anderlini, J. Ellbracht, J. J. Saborido Silva, J. D. Shupperd, N. Serra, L. F. Foreman, A. Paul, A. Li, M. S. Bieker, L. Capriotti, P. Cifra, J. Wendel, D. Kaminaris, M. Patel, J. Wang, J. Wang, A. Bohare, J. I. Cambon Bouzas, C. Cocha Toapaxi, A. D. Docheva, Pasquale Andreola, F. I. Giasemis, L. Grazette, Anni Kauniskangas, Bogdan Kutsenko, M. J. Madurai, F. Muñoz-Rojas, H. N. Nur, Daniele Passaro, J. Patoc, Gabriel Ricart, Gabriele Romolini, J. Bex, Francesca Swystun, Matteo Argenton, Pierre Paul Louis Mayencourt, Francesco Terzuoli, L. H. Uecker, Guillermo Hijano Mendizabal, Jacob Pfaller, Ozgur Durmus, J. Wagner, A. A. Adefisoye, Simone Libralon, Bilal Ahmad Ganie, Oleksandr Kshyvanskyi, Pedro Nogarolli, Andrej Sarnatskiy, P. R. Li, Yuhao Wang, Ziyi Wang, Ming Zeng, Jianyu Zhang, M. Xu, N. Tuning, L. M. Garcia Martin, L. Xu, M. Cattaneo, R. Lefèvre, M. Shapkin, S. Li, M. S. Rudolph, R. Vazquez Gomez, P. Di Nezza, F. Ratnikov, P. Vázquez Regueiro, D. Johnson, Y. Yang, A. Carbone, A. McNab, J. Peng, Federico Ronchetti, L. Hao, M. Giovannetti, B. A. Shi, Y. Wu, Z. Lian, A. Gomes, V. Lisovskyi, L. Kravchuk, A. Loi, T. Colombo, W. Hu, D. A. Milanes, A. Xu, M. Salomoni, Shulei Zhang, D. Zuliani, Atanu Modak, S. Kotriakhova, J. Mauricio, Angel Morcillo Gomez, E. Rodríguez Rodríguez, D. J. D. Thompson, Y. X. Song, M. Williams, R. Marchevski, C. Burr, R. Silva Coutinho, D. Melnychuk, A. Correia, D. Galli, M. Lucio Martínez, B. Delaney, S. Filippov, D. Strekalina, Z. Yang, E. Franzoso, S. R. Roy, S. Ricciardi, G. Robertson, H. Li, A. Villa, C. Normand, X. Jiang, Q. Shi, Q. Q. Qian, Victoria Ramos de Oliveira, W. Duan, V. S. Kirsebom, Camilla de Angelis, Y. Kang, Y. J. Jiang, Y. J. Su, P. Kopciewicz, C. X. Lin, M. Feng, V. Chulikov, J. Zhuo, M. Ramos Pernas, L. Buonincontri, A. Ene, J. Brown, J. Sun, Y. Zheng, H. Schmitz, T. Zhou, C. Lucarelli, S. Didenko, Chen Chen, L. Xu, C. A. Chavez Barajas, Quentin Fuehring, E. Ejopu, C. Marín Benito, Roman Litvinov, G. Frau, A. Romero Vidal, O. Okhrimenko, N. Néri, N. K. Watson, F. F. Wilson, C. Bozzi, T. Latham, M. Rotondo, O. Steinkamp, M. S. Soares, M. Veltri, A. G. Morris, S. E. Clark, P. Vincent, J. Kubat, C. Wang, J. G. Speer, N. W. Wang, L. L. Pappalardo, J. A. de Vries, L. Tomassetti, V. Vagnoni, C. Parkes, X. R. Lyu, T. Szumlak, L. Eklund, K. Carvalho Akiba, Z. Yang, R. Cardinale, L. Sestini, S. Chen, M. Andersson, Z. Wang, J. Wang, Shunan Zhang, L. Zhang, Q. Han, D. Ao, T. Shears, M. Garau, A. Szabelski, O. Deschamps, C. Pappenheimer, A. M. Hennequin, Thomas Peter Jones, S. Gomez Fernandez, M. Santimaria, G. Panshin, S. Maccolini, Evridki Chatzianagnostou, Sara Sellam, R. Lindner, A. Casais Vidal, V. Egorychev, R. J. Barlow, A. Sergi, A. Ukleja, S. Eisenhardt, G. Simi, A. Ustyuzhanin, D. Hutchcroft, P. Álvarez Cartelle, X. Cid Vidal, Y. Xie, T. Evans, A. Hicheur, B. Jost, R. Currie, M. Clemencic, S. Amato, P. Robbe, L. Del Buono, S. Hansmann-Menzemer, G. Ciezarek, D. Décamp, G. Bencivenni, D. Websdale, F. Maciuc, E. Thomas, Ph. Charpentier, J. Cogan, F. Fabiano, A. Satta, A. Davis, U. Uwer, M. Palutan, A. Malinin, V. Gibson, T. Nakada, W. Sutcliffe, S. Stahl, E. Buchanan, F. Machefert, C. Langenbruch, D. Popov, H. Yin, J. H. Rademacker, W. Hulsbergen, M. Gandelman, J. Ryżka, L. Mcconnell, C. Gu, D. Savrina, M. Frank, Daniele Manuzzi, D. Lacarrère, B. Khanji, C. Göbel, J. Closier, M. Hajheidari, G. Valenti, P. Perret, A. Papanestis, J. Langer, P. Neustroev, A. Pastore, F. Stagni, J. J. Cottee Meldrum, L. Carus, O. Stenyakin, F. Reiss, M. Pepe Altarelli, A. Pellegrino, M. D. Sokoloff, Y. Luo, A. Kharisova, W. B. Qian, C. Nunez, A. Brossa Gonzalo, G. Wilkinson, M. Romero Lamas, M. Williams, V. Denysenko, R. Schwemmer, Lorenzo Malentacca, P. Nogga, C. Abellan Beteta, S. Dadabaev, E. Gushchin, J. Walsh, I. Bachiller, P. Owen, M. Tobin, J. Castro Godinez, S. Gambetta, Georg Schwering, L. M. Mackey, G. Graziani, Z. Wang, S. Ponce, R. Van Laak, F. Alessio, C. Haen, B. Pietrzyk, Ivan Shchemerov, A. S. Boldyrev, Z. Ajaltouni, B. Schmidt, R. Wang, Ned Francis Howarth, Dmitrii Ilin, R. Manera Escalero, Ia. Bezshyiko, A. Kozachuk, S. Poslavskii, Y. Jiang, A. Iniukhin, N. S. Nolte, R. Hou, E. Spiridenkov, Daniel Sundfeld Lima, V. Dedu, V. Guliaeva, Ellinor Eckstein, S. Schmitt, J. Brodzicka, C. Mancuso, A. Oyanguren, T. Maltsev, L. Dai, I. Belyaev, W. Wiślicki, K. Choi, K. Petridis, M. J. Morello, J. Fu, D. Sahoo, I. Nasteva, U. De Freitas Carneiro Da Graca, C. Satriano, M. Cruz Torres, E. Cogneras, M. Kenzie, C. Vázquez Sierra, G. Raven, E. De Lucia, C. Lazzeroni, Y. Li, X. Liang, N. Bondar
article en
1 citations

Abstract

A sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>p</a:mi><a:mi>p</a:mi></a:math> collision data, corresponding to an integrated luminosity of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mn>5.5</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:msup><c:mi>fb</c:mi><c:mrow><c:mo>−</c:mo><c:mn>1</c:mn></c:mrow></c:msup></c:math> and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msubsup><e:mi mathvariant="normal">Ξ</e:mi><e:mi>b</e:mi><e:mo>−</e:mo></e:msubsup></e:math> baryon to that of the <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" display="inline"><h:msubsup><h:mi mathvariant="normal">Λ</h:mi><h:mi>b</h:mi><h:mn>0</h:mn></h:msubsup></h:math> baryon, <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msub><k:mi>r</k:mi><k:mi>τ</k:mi></k:msub><k:mo>≡</k:mo><k:msub><k:mi>τ</k:mi><k:msubsup><k:mi mathvariant="normal">Ξ</k:mi><k:mi>b</k:mi><k:mo>−</k:mo></k:msubsup></k:msub><k:mo>/</k:mo><k:msub><k:mi>τ</k:mi><k:msubsup><k:mi mathvariant="normal">Λ</k:mi><k:mi>b</k:mi><k:mn>0</k:mn></k:msubsup></k:msub></k:math>. The value <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:msub><o:mi>r</o:mi><o:mi>τ</o:mi></o:msub><o:mo>=</o:mo><o:mn>1.076</o:mn><o:mo>±</o:mo><o:mn>0.013</o:mn><o:mo>±</o:mo><o:mn>0.006</o:mn></o:math> is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value from Run 1 to obtain <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"><q:msubsup><q:mi>r</q:mi><q:mi>τ</q:mi><q:mrow><q:mi>Run</q:mi><q:mtext> </q:mtext><q:mn>1</q:mn><q:mo>,</q:mo><q:mn>2</q:mn></q:mrow></q:msubsup><q:mo>=</q:mo><q:mn>1.078</q:mn><q:mo>±</q:mo><q:mn>0.012</q:mn><q:mo>±</q:mo><q:mn>0.007</q:mn></q:math>. Multiplying by the world-average value of the <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"><s:msubsup><s:mi mathvariant="normal">Λ</s:mi><s:mi>b</s:mi><s:mn>0</s:mn></s:msubsup></s:math> lifetime yields <v:math xmlns:v="http://www.w3.org/1998/Math/MathML" display="inline"><v:mrow><v:msubsup><v:mrow><v:mi>τ</v:mi></v:mrow><v:mrow><v:msubsup><v:mrow><v:mi mathvariant="normal">Ξ</v:mi></v:mrow><v:mrow><v:mi>b</v:mi></v:mrow><v:mrow><v:mo>−</v:mo></v:mrow></v:msubsup></v:mrow><v:mrow><v:mi>Run</v:mi><v:mtext> </v:mtext><v:mn>1</v:mn><v:mo>,</v:mo><v:mn>2</v:mn></v:mrow></v:msubsup><v:mo>=</v:mo><v:mn>1.578</v:mn><v:mo>±</v:mo><v:mn>0.018</v:mn><v:mo>±</v:mo><v:mn>0.010</v:mn><v:mo>±</v:mo><v:mn>0.011</v:mn><v:mtext> </v:mtext><v:mtext> </v:mtext><v:mi>ps</v:mi></v:mrow></v:math>, where the uncertainties are statistical, systematic, and due to the limited knowledge of the <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"><y:msubsup><y:mi mathvariant="normal">Λ</y:mi><y:mi>b</y:mi><y:mn>0</y:mn></y:msubsup></y:math> lifetime. This measurement improves the precision of the current world average of the <bb:math xmlns:bb="http://www.w3.org/1998/Math/MathML" display="inline"><bb:msubsup><bb:mi mathvariant="normal">Ξ</bb:mi><bb:mi>b</bb:mi><bb:mo>−</bb:mo></bb:msubsup></bb:math> lifetime by about a factor of 2, and is in good agreement with the most recent theoretical predictions. © 2024 CERN, for the LHCb Collaboration 2024 CERN

Physical review. D/Physical review. D.Vol. 110(7)
University College Dublin (IE), Eötvös Loránd University (HU), Universidade da Coruña (ES), Universidade Federal do Rio de Janeiro (BR), Uppsala University (SE), Jagiellonian University (PL), Rutherford Appleton Laboratory (GB), Los Alamos National Laboratory (US), University of Bonn (DE), University of Liverpool (GB), Universitat de València (ES), Hunan University (CN), University of Groningen (NL), South China Normal University (CN), Université Clermont Auvergne (FR), Universidade de Santiago de Compostela (ES), TU Dortmund University (DE), Peking University (CN), University of Zurich (CH), Aix-Marseille Université (FR), Heidelberg University (DE), University of Cambridge (GB), Cracow University of Technology (PL), Pontifícia Universidade Católica do Rio de Janeiro (BR), Université Paris-Saclay (FR), University of Michigan (US), Laboratoire d’Annecy de Physique des Particules (FR), Kharkiv Institute of Physics and Technology (UA), Australian Regenerative Medicine Institute (AU), University of Manchester (GB), Maastricht University (NL), University of Bristol (GB), Universidad Nacional de Colombia (CO), Wuhan University (CN), University of Warwick (GB), Sorbonne Université (FR), University of Oxford (GB), Central China Normal University (CN), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), National Institute for Subatomic Physics (NL), Centre de physique des particules de Marseille (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata (IT), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Centro Brasileiro de Pesquisas Físicas (BR), Istituto Nazionale di Fisica Nucleare, Sezione di Genova (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Laboratoire Leprince-Ringuet (FR), Max Planck Institute for Nuclear Physics (DE), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Consejo Nacional de Rectores, Laboratoire Médiations (FR), Imperial College London (GB), Universitat Ramon Llull (ES), Monash University (AU), University of Cincinnati (US), Massachusetts Institute of Technology (US), University of Maryland, College Park (US), European Organization for Nuclear Research (CH), AGH University of Krakow (PL), Université Savoie Mont Blanc (FR), Syracuse University (US), Universitat de Barcelona (ES), Lanzhou University (CN), University of Glasgow (GB), University of Birmingham (GB), RWTH Aachen University (DE), University of Edinburgh (GB), Tsinghua University (CN)
National Science Foundation, U.S. Department of Energy, Alexander von Humboldt-Stiftung, Karlsruhe Institute of Technology, CERN, UK Research and Innovation, Ministerul Cercetării, Inovării şi Digitalizării, Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei', Leverhulme Trust, Royal Society, European Commission, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Bundesministerium für Bildung und Forschung, Ministry of Science and Technology of the People's Republic of China, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Generalitat Valenciana, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Max-Planck-Gesellschaft, Narodowe Centrum Nauki, Ministerstwo Edukacji i Nauki, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, National Academy of Sciences of Ukraine, Centre National de la Recherche Scientifique, Financiadora de Estudos e Projetos, Ministerio de Ciencia e Innovación, Région Auvergne-Rhône-Alpes, Xunta de Galicia, CAS Center for Excellence in Particle Physics, Institutul de Fizică Atomică, Australian Research Data Commons, Centro Svizzero di Calcolo Scientifico, Science and Technology Facilities Council, European Research Council, Australian Research Council, Deutsches Elektronen-Synchrotron, Instituto Nazionale di Fisica Nucleare, Guangzhou Municipal Science and Technology Project, Fundamental Research Funds for the Central Universities, Institut National de Physique Nucléaire et de Physique des Particules, Nuclear Physics, Key Research Program of Frontier Science, Chinese Academy of Sciences, H2020 Marie Skłodowska-Curie Actions
Openalex Percentile: Top 14%
Particle physics theoretical and experimental studies
0.66
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.